Did you read the findings of the committee? Obviously not. Because if you did, you'd know two very important things: Firstly, the advantage that the runner has is in straight lines after acceleration, because of his running motion. The researcher that found this advantage was specifically told not to look for disadvantages. "We're looking for advantages, not disadvantages" was the exact quote. And as such, the first team didn't look at whether or not he consumed as much oxygen, expended as much energy, or fatigued at the same rate. Nor did they measure him in any other scenario he'd face in a 400m race, such as rising from the block, accelerating, or turning.
The committee threw out the findings not because of any pressure, but because the research done that found he had an advantage was inconclusive. The rule (which was written with him in mind) only excludes runners who have a net advantage. In other words, they did not show he had an overall advantage over other runners.