Well the logical answer is if the gun was fine, then you most likely messed up..somehow, dont know how but unless there is magic involved someone or something did not work right.
I would never carry a firearm that i could not trust (if i had a choice)and i doubt you will trust it no matter what they say. Humans are good that way.
If you could trust it keep it with a different holster.
I am not looking down at you or anything so please dont take it that way, we all make mistakes, if you are the one that caused it.