I've got pretty much the same issue here, too. My son decided to recline the front passenger seat all the way back. Now I've got one side pulling the seat up and one side doing nothing, putting a nice twist into the seat. Anyway, it looks like there's a cable under there that goes into the motors and it might have twisted too much. Here's what looks like the repair: Johan & Sean's E32 Page
It's in the section labeled body and interior. I'm going to check mine out tomorrow. Anyone do this lately? Any helpful hints?