I have to agree with r_f on this one. He has the energy to go on a bike ride (and I know it's not just a leisurely pedal around the block) but he can't drag himself off the couch or bed to do anything else?

It just sounds like he's more than willing to do things that end up upsetting you but won't make any move to do anything to help. And if you remind him of the goals set up in therapy, then he just balks even more.

It almost sounds more like an attitude problem on his part than a depression problem.

Just my opinion.