[mac5732]

The question I believe is one of ethics. However, several points need to be addressed before various judgements are made (in my opinion only)

1st, what, if any, were the rules or restrictions upon which the game was originaly set up?
a. was this situation addressed prior in anyway

2nd Did the person in question do it maliciously or innocently as part of trying to win the game without meaning any harm?

3Rd What was the reason for the surrender to the other player. Was there something else other then a way to win??

4th As a host, (in my opinion only) it appears on the surface that he should have at least explained to the other players as to why and what for, as otherwise, no matter how you look at it and whether it was allowed or not, was in poor taste.

Was it cheating? If it was not addressed or restricted prior to play, then whether one likes the results or not, it is legal in game turns. If no one said it can't be done then there was no restriction on its usage, tho again it was in poor taste unless there is mitigating circumstances.

Therefore, if it was not discussed, restricted, or specifically not allowed prior to starting the game, then its use is legal during the game, again whether one likes or not..

I would discuss it with him and see what his explaination is. If its just his way of trying to win then you learned a lesson in game play...discuss aspects of game prior to playing..

just some ideas mac