Talushorn level 3 lever room (possible spoilers)

[Gorgon Rider]

So, I didn't notice the plaque on the wall before entering this room (the one with 8 levers) and moving forward. Trying to leave before going up to level 4 to resupply and sell some loot, but the doorway out is now blocked in this room and I see no way of opening it. Tried a search of the forums but haven't found a solution. Is there any way out or am I trapped in here now until the end?

[silverkitty]

Yep. Gonna have to put some loot in a chest if you're overburdened, otherwise carry it with you to victory (where you'll get more loot points for it, anyway)

[Gorgon Rider]

Bloody hell, I really wanted to stock up on some potions (and I left all my alchemy ingredients at Picaroon Island). Oh well, I guess it's onward and upward!

Thanks for the link, J_L. I found that thread when I did a search but was unclear on if it was a definite 'no going back'. Guess I'm straight on that now. I posted in that thread as well.