Today I took my Glock 22 Gen4(5000 rounds since March 2012) out to the range and experienced an issue. I loaded with Tulammo, pulled the slide back to chamber a round, and fired. On the first shot the slide locked back, frame curved, and jammed. It ejected the case from the first round, and had the next one partially out of the mag. As soon as it jammed I went to clear(chamber was clear of any rounds). I couldn't release the slide. Had to place barrel on table to force it down to release the frame from being curved before it either cracked or was damaged more. Once I did that I was able to cycle the slide, and the frame straightened out again(besides the pig nose). However I can not pull down on the slide lock tabs to disassemble the gun. I'm assuming its possible I didn' put the spring back into the half moon when I cleaned it last. I'm usually very good about it, but mistakes happen. After cleaning I do cycle the slide a few times to make sure its smooth and to distribute any oil on the rails. I didn't feel any issues when I did that, nor when loading that first round. I also cycled the slide a few times before using to make sure it was empty. When I fired the shot I did feel like gunpowder residue pepper my face(good thing I had eye protection). Problem is.. How to I get the slide lock tabs unstuck? Is it even safe to shoot again, or am I better off sending it to glock? I'm hoping I just need to replace the spring instead of sending it off to glock. Any insight is greatly appreciated.