Have you tried going for a long slow walk? It sounds like the nerves are all still jangled from the seizure. It happens and it takes time and repeated walking to straighten it out and get all the nerve pathways working correctly again. A slow tread mill is best, but walking up and down the driveway can suffice.
Nope, and what he is experiencing now isn't a 'pinched nerve' either. It's cascade pathway overload from the seizure. The pathways need to be re-established (tuned) by repeated normal use to regain functionality.