I could be remembering wrong but kingroon are mostly groove mount v6? It’s even more puzzling. Are the threads ripped off on the nozzle or block or did it unscrew itself?
The nozzle was probably already loose, for starters. It may have been possible for the nozzle to catch on the print with a blob that was forming from the loose nozzle.
Once the nozzle was stuck to the print, it got ripped off the bed and the movement of the gantry likely caused the print to spin. If a “leg” kept getting caught on something during travel, that would make sense.
After a few dozen moves, presto! Nozzle is unscrewed and is now one with the print.
Unless something in the hotend was actually broken to cause this, it’s a perfect example of why nozzles should be tightened at a higher than normal temperature. Loose nozzle == bad time.
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