Although anyone can make mistakes, I very much doubt that putting someone in FFXIV gaol , as a GM is acting in the normal course of their duties- would constitute any violation of any US laws. I would be pretty surprised if the game didn't have some time of timer so that someone couldn't be stuck in there indefinitely.

Anyway- even if no so mechanism exists- you can message a GM to get you out. As long as OP gets a reasonable response time- don't see the legal issue. Feelsbad tho for OP.