"The other players hunted the dragon down and (through good planning) killed it. Adult green dragon. Yes, the monk eventually got through the LAs and stunned it ... so it goes."

IME as the BBED flies away w/ one of the party, the dynamic changes significantly - this isn't just a 1 v 6 fight for the party anymore, this is a can we rescue the grappled PC before the dragon eats them?, and next time we face it it's a 1 v 5 and we all know it will take one of you and end you ...