To some extent that depends upon what you understand by "hallucination." By that term I mean a perception of something that is not possible by the physical laws, but is perceived to be real in the external world.
If you read my longer link you will see that I think EVERYTHING we perceive (hallucinations and things that are possible / in accord with the physical laws) is achieved by exactly the same brain process, (Taking place in the parietal brain, almost certainly except when we are in deep dreamless sleep). Most dreams are in some sense hallucinations as they often contain perceptions that are in conflict with the physical laws.
When we dream, the exact same process in the parietal brain section is creating our perceptions (a parietal simulation of a world) as when we are awake, but in dreams, this simulation is not constrained to be of possible physical realities.
When we are awake, the simulation is constrained, normally, to be a quite accurate model of real world events. Often there are minor discrepancies, which we call "illusions." For example, two identical curve sticks, placed side-by-side are perceived as if one were longer than the other. If we don't know that they are identical, that is not only what we perceive, but what we believe also. Thus one is not aware that the illusion is not real unless they have prior experience with it and know it is only an illusion. For example, the appearance of a distant lake of shimmering water in a desert is recognized as an illusion only because of prior experience that shows you cannot go there and drink.
All this is the same, true, for the more complete illusions we call "hallucinations." They too are perceptions created in the parietal brain simulation of the external world, that happen to be in much stronger disagreement with what is physically possible than mere illusions are.
As I said at the start, whether or not you had a hallucination depends upon your definition of that term. By the definition I suggested, you did have a hallucination. The fact that it was very real to you does not change that. Often, like illusions (which are really minor hallucinations) they will seem to be accurate perceptions of the external world.
Now if your self crumpling letter was a real world event and not a hallucination, then by definition a miracle occurred. I, and most, I think, define a miracle as a violation of the physical laws. As I have noted in posts here and the longer link my POV about perception is very similar to that of Bishop Berkeley - the only difference being that I have a parietal brain simulation creating my perceptions and he had God giving them to him. (For him, there was no real world existing and I can only infer it does, not prove that it does.)
For him, the fact that the real world he perceived did follow regular laws was a little strange - why could it not be more dreamlike since it was just God's creation in "real time"? For example, water could run up hill, if that happened to be God's fancy one day and downhill the next.
His answer to the question as to why the world seemed to be governed by physical laws was very clever, IMHO. He reasoned, correctly, that if there were no rules (the laws of physics) normally describing / governing the perceived "real world" then God could never work a miracle! I.e. miracles are by definition a violation of the physical laws.
Your self crumpling letter may have been a miracle but it does seem strange to me that God (assuming he exists and made this miracle) would be concerned with such trivial things and not, for example, have made Hitler die before he could kill 6 million Jews and about as many Romani, mental defectives, Homosexuals, etc. as he "purified" the "master race."
i understand what you're saying. this is probably the most courteous response i've received upon sharing this information, so thank you.
this event was one in a progression of many strange events that happened over a period of time. that's why by the time i got to this event, my reaction to it was fairly blase. if it had not occurred in conjunction with these other events, and if these events had no meaning, i would be inclined to chalk it up to a hallucination.
in regards to the meaning, these artists are not small time; they have massive audiences that cling to their every word, and their message is very important. in conjunction with biblical prophecy revelations that i received at that time, these events will imo change the lives of many in a good way. it's just a matter of timing, which to reiterate, i do not possess knowledge of any time frame. but i will say that the prophecy revelation had to do with the book of revelation in the bible, and had very apocalyptic overtones that signified the coming end of an age and beginning of another. i tend to make the assumption that this wouldn't have happened to me recently, if that new age was not immanent. :shrug: