Hmm, I would think this is a rare occasion. In order for them to "win" - you have to be tied on league points and thus using game points for the tie breaker. So, that means they have played as well as you in other matches.

Plus, unless they conspire together - (ie they are both trying to gain points - and thus should be fighting) - there is a danger inherent in gliding - someone with an engine will shoot you down.

However, I do find the "gliding forever" rules a little disconcerting. I think in _any_ game when you lose your engine, your fuel should be set to zero. Then when all fuel/engines are gone, it is like the normal end game rules (ie a random 1-5 turns and the game ends)