Alan wrote (on LG forum): If tasuki had played 21.r10, I would have played 22.o5. So then, if 23.s8, then 24.s5, and I assert that K3 and K7 are both effectively connected to the right side by that. I think 21.e15 was actually a pretty good move. It kept K3 and K7's status ambiguous and forced me to get creative.
This probably doesn't work with that huge black wall of links to get past, but it's better than giving up :-)
9.R14 was probably not the best. 9.N8 would have threatened K11 or R14.