Never had anything like that happen thankfully. Unless the pall bearers fuck up their job, a lot of the important final steps are done mechanically now. We used a CLS or casket lowering system for getting it down to the vault. It mechanically lowers the coffin evenly down to prevent tipping or rough landings. Had one fail to lower before but they build them in a way that it just requires some turning off a manual crank on each end to get it down there instead. A little less fancy looking but better than fucking around and finding out in front of a lot of people. I did have a homeless guy get himself arrested once. We had a break-in on an older mausoleum (Est: Late 1800's). We couldn't figure out wtf and re-secured the site, filed a police report. Well a few days later the cops show back up. The guy that did it was reported by some other homeless dudes because he had been going around bragging that he was "sleeping in a crypt". Being from a smaller area, one of the more weird things to get used to is honestly processing the remains of people who I knew or interacted with when they were alive. Never knew how much illicit shit happens in a cemetery until I worked at one. (Ie: people using other people's grave sites for drug deals etc...). Or people who try to bootleg bury ashes or pets without the cemeteries approval or knowledge. There are plenty of interesting parts to a job like that. Sorting and processing the remains after the retort is done with its work is pretty interesting stuff too. Typically, I found as long as you go about things in a structured manor, you typically don't have much stress or crazy things happening.