Amy-
I meant to get to this earlier....
Having had knee surgery that put me out for a good while....
I think it threw me into a depression that I think has lingering effects even more than twenty years later. I think the idea of just going over and being with him, and helping with things around the house and your daughter makes sense. Help him relax, and feel not useless. A bit challenging, since you'll be doing the stuff, but maybe have him participate in ways that don't take a lot of physical effort. Watch a movie, have some popcorn. Keep the pressure down (I think the bikini staying put away is good, in any case). But be there, and let him be comfortable with you.

OJ