Taylor Kingston wrote (28 Aug 2006 10:56:09 -0700):

7 I can find only a very brief mention, on page 15 [of No
7 Regrets]. The first press conference of the 1992 match,
7 on 1 September, had this exchange between Ivan
7 Solotaroff of Equire magazine and Fischer:
7
7 Q: Why did you take on h2 in the game against
7 Spassky in 1972? Were you trying to create winning
7 chances by complicating a drawn position?
7 A: Basically, that's right, yes.

_
This would seem to contradict the idea (mentioned by
LiamToo, 28 Aug 2006 07:57:23 -0700) that "Bxh2!!
and then game 2" was part of an attempt by fischer "to
strenghten Spassky's confidence and make the entire
match interesting".