Just a few notes:
1) Most of this thread was players quibbling back and forth about Torn Hero vs. Heel Snipe. Then suddenly I get a "seriously guys, need an official ruling."
so
2) I find time this afternoon to discuss the issue with Hata. Hata confirms it protects one card, that it does not negate an entier effect.
3) I'm really comfortable ruling that since Akuma's cost has been paid prior to Torn Hero being used, if he commits more then 1 foundation to pay the cost, that Torn Hero can't do squat, since more then 1 card is being targeted by the ability. I get the feeling that if I do that, people will riot. Hence the it protects one card. There is a similar interaction to this previously, with similar wording, and it survived the AGR. For the life of me I can't remember which interaction it was.
4) Red Lotus is different because while it too says "a card", it negates the entire card's effect. Where as Torn Hero commits itself instead of "a card"
5) I'm fairly certain that Torn Hero jumps in front of Amy's and says "sucks to be Amy's". I'm going to try and hunt down Hata over the next 24 hours and get him to spend some more time with me discussing this thread.
6) Dut - Offlimits, hence protected, because it jumps in front of the ability
I wrote all but 6 prior to reading Dut's post, but I think what I wrote above covers most of Dut's concerns.