I get the same thing (have it right now) and that is exactly how I describe it - it feels like my tendons or ligaments are being torn apart. The pain is quite violent. I get the same feeling in other parts of my body as well.

I should note that I have osteoarthritis in my spine but I also have psoriatic arthritis (PsA). I also think that at least some of my spine/back pain stems from my PsA, but it can be hard to tell. I had a PsA flare in a knee so bad that I could hardly pull my pants over my leg (it was that inflamed) and the pain was so bad that I really couldn't put much pressure on that leg. I had multiple steroid injections over time and the joint pain & inflammation finally went away, but I still had lingering pain on points on the sides of my knee. Those areas also felt like they were ripping. It turned out I had enthesitis there, so now I wonder if I could have the same thing going on with my lumbar spine/outer hip/pelvic area. Sometimes the pain spreads to my sacral area and with it all, I have described as feeling like I was a chicken bone being ripped apart.