Yikes! I wonder what difference it would have made if he were in the VX when it happened, although I'd have hated to see that happen to the VX. I am very glad to hear he's still with us! You both will be in our thoughts and prayers.
I understand how it is to try to take care of someone who just can't stand to sit still. :-) My Dad was in a bad way some time ago and we had to make him take it easy, and it's torture for someone who is just always doing something. I don't know if Andy is going to need it or not, but the good thing is that folks like him and my Dad are the kind of people who do really well if they have to undergo physical therapy because they are relentless where other people would just give up and never get back to how they were before. My Dad would have been in a wheelchair for the rest of his life but he'd try to walk around when no one said he should, and it hurt a lot and he'd fall down, but that's how he got his legs back. Stubborness can be good too. :-)
Anyway, best wishes and I hope he has a speedy recovery!