I'm really good about PT homework, and the gym is as much to keep the habit as anything else. Ride the recumbent, a good stretch, and I'm told to use pain as the indicator of what not to do. I don't have a full rupture, and I don't have nerve problems going down. Only going up, and making blinding headaches. But as long as I don't haul on the neck- I'm good.
Maybe you should talk to somebody about the foot and leg, Kimba. You may have lost strength by favoring it when it was numb, so perhaps you could ride drills or use leg press to get it back? Asymetrical leg strength can set up other problems, and it'd be better to do one legged pedaling drills now. If that's the problem.
Something to think about,

Lizzy