To be fair, Morozevich gives 9...bxc6 as the main move in his According To book with 9...exf2+ as an alternative in brackets, although admittedly he does think the latter also leads to an edge for Black. 
Bronznik only covers ...exf2+. 
Wisnewski in 1...Nc6! doesn't cover the line, presumably on space grounds as he has played it as Black.
The bottom line is that gxf3 seems to be a good improvement over Kxf3 in the ...exf2+ line. Unless a counter-improvment is found, Black is definitely better off with the counter-intuitive ...bxc6.

Nice! a pity you didn't play Morozevich with White, he would have been embarrassed after the perpetual . At the position you give, perhaps Black can play 22...Rgd8 and push the d-pawn to untangle, it is humble but probably enough to keep balance. At least, White doesn't seem to be winning on the spot.