You've run into the problem of the design of the TRS. Yes, sounds like you broke it. THEY CAN last quite some time, but there are two issues:
1. If you dry fire a bunch (which people who need to remain proficient in DA should do) this puts more wear on them.
2. You should look at replacing the TRS with a CGW model - it should last longer. If I had time to log in dry fires, I'd have a better handle on it, but some can last 5000 pulls, some 1500 in my experience.
3. Some say oiling the TRS helps it last. I believe this might help.
If you look at the TRS it has a design that lends itself to breakage vice other designs. IMHO that is the source of the problem.
OTOH - There are some on this site that have NEVER broken a TRS - don't know how many dry fires they do, but they have not broken any.
I do think if you DON'T dry fire much at all, it may not be an issue. I do and have broken plenty.