I had something similar happened to me late May this year, cervical spine injury. THough mine was because of the neck spine collapsing due to muscle injury (the muscle was not providing enough support for the bone causing it to collapse and pinched the nerves). The effect, lost alot of strength on my left arm (from 25+ kg overhead db press to less than 5 kg).

Went to the ortho specialist and weirdly was told that i can continue lifting since he said that if i were to join physio, i will be doing the thing anyway. But i did stop going to the gym for 8 weeks and did bodyweight exercise and using the dumbbells/ez curlbar that i have at home. Happy to say that now more than 90% recovered.

For your case, i'd suggest that you watch the Hodgetwins vids? Keith had similar problem with you and the twins literally avoided conventional squat and and any form of deadlifts (they do perform sumo squat with the dumbbell) and they're making gains just fine though. If you're not experiencing any numbness or strength loss anymore from any part of your body (usually lower body for the L regions), I'd suggest you start slowly instead of gungho into your old routine.

Also try seeing a chiropractor. it certainly did help for me.

Goodluck.