heres the story, Two weeks ago I was semi sumo deadlifting, pulled 610x3. Afteri decided to hit a heavy single conventional missing 605 just above the knee cause I put everything into my heavy triple. I felt some tension in my back when I dropped it but no pain. The next day one of my buddies was doing cleans and I always mess around and said I could one hand snatch it ( only 85 lbs ). Did it fucking around using my right hand. The next day still fine some soreness but nothing out of the ordinary. The day after, I go to squat. Going up by plates. When I get to 405 I unrack it and step back and have pain in the center right of my back like a bad cramp. I rack the weight and leave I still lift the following days but the pain goes away over about a week. I actually squat a new best with 405, 12 reps. Then two days later I'm squating again and unrack 405 again and feel a little pain mid right on my back so I just drop the weight and move on. it feels normal the next day. About 2-3 days after that I am able to squat up to 405,425,445,465 all triples. Two days later I am squatting 405 and at the top of my second rep straight across the center of my back was intense pain almost couldnt rack the weight. that pain was so bad I couldn't breath but two days later and it doesn't feel that bad. I'm used to squatting 500+ a few days a week and this did not hurt my deadlift other then mentally. I still pulled high 500s into 600s during this though not when I was in pain. Any thought on what I did to my back my one buddy said I should see a chiropractor.