I'm surprised (although I probably should not be) that most of the answers in this thread do not address the true concerns.
This issue has nothing to do with "conditional statements are not binding." When a player is all in, with two or more assertional players in the hand, no one should be saying anything about what any players will or won't do. This is collusion.
Players will often check down a hand, when another player is all in, in an effort to eliminate the all in player. This is fine, as long as there is no discussion about doing so. "Table talk," like this is not allowed.
41. No Disclosure
Players are obligated to protect the other players in the tournament at all times. Therefore, players, whether in the hand or not, may not:
1. Disclose contents of live or folded hands,
2. Advise or criticize play at any time,
3. Read a hand that hasn't been tabled.
The one-player-to-a-hand rule will be enforced.
43. Ethical Play
Poker is an individual game. Soft play will result in penalties, which may include forfeiture of chips and/or disqualification. Chip dumping and/or all other forms of collusion will result in disqualification.