I can't pinpoint the exact spot that you are referring. However, I've been able to get out of a few places like this by echo-ing and warping to a barrel (or whatever) that is just barely outside my "Echo ring" . I've even able to do this a few times with things that I thought were beyond my reach.
Is there anything around that looks like it can be echo-warped into?
Otherwise, I wouldn't be surprised if it was a game breaker. I warped myself into a spot that results in my immediate death upon reload. Now I'm having to restart the game, when I was only 4 or 5 rooms away from the end.