The sooner I can get out of Neverreap, the better. So I always try to do my best and get the run over and done with. One time, had a fantastic DRG in the party (I'm BLM) and we beat the final boss before it could go into "I'm annoying. Kill my farts" mode a third time.

Anyway, you could have kicked the DRG from the party after they threatened you. Could probably kick them for being lazy, too (intentionally didn't meet parties expectations).