a gay team spiked with straight ringers. and they won. I guess that means that a straight guy is better than a gay guy any day.
In the flamer league, its not so much about the sport as it is with the locker room afterwards. The straight guys probably raised suspicions by not using the locker rooms at all. Probably made a beeline for their trucks (straights don't drive a Prius), and getting away before the gays on the other team could get their phone numbers ("But wait, I want to buy you a drink while you're still sweaty!").
The straights probably did a lot of things to raise suspicion, like not being bitchy or catty. Not needing a psychiatrist. Never showing up on shopping night, or the bi-annual dropped soap festival. and no one could ever recall seeing the straights at any of the bath houses.
Probably just being self reliant types with no mental problems was enough to raise suspicions.