I'm stuck too, but even before all that. I arrived at Bastard's Wound, spoke to both leaders and chose the quest of Jaspos. After talking to Cassandra I decided not to take her stuff and went back to blame Jaspos, but all I got was that Jaspos talked back in a rude way (to the Fatebinder and the master of the Spires, mind you) and there's no dialog with him from now on.
Also, I don't see any quest lines in the dialog with Wagstaff. So I have no access to other levels and what - no way of getting them? Me, the great Fatebinder, slayer of Archons, the one who challanged Kyros?) It's just ridiculous)
Anyway, is there a way to get Wagstaff's quest anyhow or get access to lower levels any other way?