You did not mention any red flag symptoms in your description, so I would not worry about diagnostics (getting a straight leg raise test or an image) to label this as anything other than a "back tweak" because they would not change the intervention (after all that's what a diagnosis is for right?). Most of these types of tweaks work themselves out on their own over the course of anywhere from a few days to a couple of months. You will probably have to significantly reduce the load and then gradually build yourself up again with bigger jumps. I would do linear progression style loading with squats and deadlifts 2x/week. Depending on how bad it is, I would probably start between 95-185 and take 10-20 lb jumps a session until you are back in the mid-high 200s before transitioning back to a similar program that you were just on. Also, depending on the environmental situation, when things get heavy again, you may have to change the program such that it allows for shorter rest intervals, so you do not get cold between your sets. Something like a top set with larger backoffs for sets across, so you can get away with a 2-3 min rest interval. Hope this helps!