In my opinion, a player is entitled to ask a TD for the house rule in most situations. Also, the TD should be obliged to provide a response that is fair and in the best interest of the game. The response should not favor a particular action.
In this case, a player has acted OOT and a skipped player has asked for clarification on the house rule. If I were the TD, I would say: "We follow the TDA Rules. The OOT action is subject to penalty and is binding if the action to the OOT player doesn't change. Now, it's your turn to act sir."
If the skipped player presses for additional information, I would simply say that I have stated the house rule and it is now up to the skipped player to act.
Of course, players have a responsibility to know the rules when entering a tournament. We cannot use game time to teach rules to players.