It seems the only muscles Tyler has control over are his face muscles. He can't even hold his head up, his arms flail around pretty much on their own, but he could teach acting classes at the community college with his facial contortions. Watching him reminds me of those fridge magnets of the emotion faces - y'know, the "Today I'm... [fill in the emotion]."
Check out these photos... You can cut along the lines and stick these on magnets for your own "Fridge emotion" display if you want.
