There's a difference between group-mentality active shunning and "Joe is a dick and I don't want to hang out with him."
If you get frozen out of an entire group of guys, you're probably a tremendous pain in the ass. I'm still friends with people who have caused me grievous injury in the past because they're still cool guys.
Guys don't make collective efforts to "freeze out" people because, in general, men do not form like-minded collectives the way women do. If you're finding no point of entry into a group it's almost certainly because you fucked up.
Now, it's entirely possible that some turbo-beta types might do that bitchy, dramatic kind of nonsense but honestly why would you want to hang out with low-quality people? As a general rule, men are very socially tolerant as long as you're making an effort. If someone can't meet the standards of 'proper' men enough to have a social life among them, they're probably kinda trash.