After escaping the temple (Bane’s? Another deity’s?) the party encountered a group of frog-men who worshipped a pile of black ooze. The creatures attempted to persuade the party to join them, but diplomacy proved useless. The ooze itself joined in the attack – an unfortunately recurring theme.
The party floated on the remains of their vessel, taking the time to kill a giant kraken with an poorly planned whirlpool gimmick. They eventually washed up on the shore of Blackwell.
Canonically, Agro Crag threw himself off the debris and drowned. (That’s what the adventure log says.) This has presumably been retconned.