Michael has been deliberately sandbagging Terri's condition. His actions prove that her condition is much better than he claims. Give Terri a week with sunshine, fresh air, a kitty cat, and some quack doctor who waves magic crystals over her head, and she'll be much better. Substitute an honest and good doctor, and she'll be better yet.
You have touched on what MS and Greer fear most. They will be exposed for their treachery as Terri's life improves. The world will be a witness.