I remember this feeling really cruxy.
I've just dug out 2 photos of me crossing the roof and I appear to be doing what you describe. After getting the 2 finger undercut with the left it looks like I used a right hand undercut/side pull flake thing with the right at about the same height as the left hand hold but above the jug. No idea what happended next though, sorry.
If it helps I could e-mail you the shots.
Dave