I think due to her lack of care and therapy that it's unlikely she improved on her own, but that's something we'll never know, and we could have.
Had Michael been convinced of his position, he surely wouldn't have minded silencing his critics by having her fail all the tests and then proceeding to remove the tube.
Exactly. I hope you, therefore, can understand why many of us have been so anti-Michael. His actions were entirely consistent with his knowing Terri's condition to be much better than he claimed it to be, and made little or no sense otherwise. The reason many of use didn't need to see test results that showed Terri wasn't PVS before saying that she wasn't is that Michael's behavior told us all we needed to know.