So, my KDF alt happened to be doing the devidian arc during the 'griefing' and, while I may have missed something, it all seemed extremely goofy and harmless. All the dental people were in one instance, hosing everything down with fire extinguisher fog, and claiming to be fire prevention teams coating all surfaces with flame retardant foam. "Are you on fire right now? No? THEN THE FOAM IS WORKING" They were even doing light RP, upbraiding that station owner NPC for lax safety standards.
Some RP'ers (or possibly random passers-by) were getting into the joke, posing things like "/me thoughtlessly lights a cigarette" at which point all the dentals would start screaming incoherently and mob them with the foggers. It had a pleasant party atmosphere, really, and felt a lot more like a prank than griefing. I intentionally switched to the dental-dominated instance and, to be honest, had the least skeevy devidian run any of my alts have enjoyed (with, it probably bears mentioning, a shirtless Orion).
Now, it's possible there was something nastier going on in tells or before I got there. God knows some of the station regulars were hurling invective at the trolls in zone. But from what I could see, at least, it was more the funny/stupid face of trolling than the cruel one.