In reply to philhilo:
I have, but can't think for the life of me how you would have ended up on the left hand side of the cave...
All the routes over on that side are pretty hard/uncompromising (Shadowy World of the Nemotode/Ultraviolet Exterminator etc...) and from having sat on that chockstone for several hours whilst attempting the
Flytrap Roof (E5 6a) I've never noticed an easy line high up across that side.
The Porcelain Arena (E6 6b) goes somewhere around that region but I've never really figured out where, plus it's a highly unconventional George Smith E6 that you're unlikely to stray onto this in the name of finding the easiest line!
In the Next Room (E3 5c) comes in from the outside (as per
Bury My Knee (E5 6b)), hence if you went into the back of the zawn it couldn't have been that.
Anyhow, all that rambling aside I am at a loss of where you went (but absolutely fascinated to find out) - any pictures?