after the big cannon is destroyed, the story stopped progressing. we waited for about 15 mins. there were two risen grubs stuck inside the ship which we killed with life transfer, but no fix. i also did disconnect right before the big cannon got destroyed, after which is rejoined the party. i dont know if that affected it.
epic endgame moment ruined. i wont be trying again, takes too long. looks like it will take about a year to fix the bugs in the current content by the looks of it.