movetoqt xxx - Teleports you to the quest marker, replace xxx with quest ID (for example: taking a Thieves Guild burglary side quest you input "movetoqt tgrbe").
showquesttargets - Shows all current quest IDs, note: Having more than four quest or more may have some quest IDs will be cut off when displayed in console.
Try this.
Trouble is, I'm worried that there's probably some secret entrance whatshisface needs to open to make it possible to get to the leader normally, or something like that, so if I warp there and start the next quest, he'll never open it.
In my experiences with Oblivion, I found that meddling with quest stages, IDs, and stuff, usually just made things worse. I have plenty of other quests to keep me occupied for now, so I'm happy to wait for a patch, at least until I run out of other stuff to do
