Spoke to my other half about your post briefly the other day, she’s in the IT part of the holiday business and ex BA, but from what she’s (always) told me, once the plane leaves that dock (or whatever it’s called) it has technically left and not down to the airline so they don’t get penalised or are liable for any claims, I’ll have to ask her where you stand if it re-docks but I don’t think it would matter.
What she did say (and tbh I can’t remember exactly what she said lol) but something along the lines of if the Police are called to eject someone, then it’s normally in the small print that it absolves the airline from any responsibility also, so not sure who you could take it up with after that (if anybody) , but I’ll ask her to clarify in response to what you’ve said.
There’s a lot of sneaky stuff that goes on which I never really realised.