Males occasionally have potency, contrary to popular belief. If nothing else, they at least make good drying and curing practice so unless you want to take a crack at pollen storage and breeding, you may as well cut 'em down, hang them up and see what you get (check out the Harvesting and Curing forum -- there's a nice, simple tutorial on curing and trust me, after playing around with my males.. a little practice is not a bad idea). I cured a couple male bubblelicious.. shit you not, they have a little buzz, and the taste and smoothness of the smoke is fan-fucking-tastic all by itself. Better than some female schwag I've had on occasion..
You should do this in a room well-removed from your grow -- pollen is designed to get around, and even after you cut a plant, a flower can mature and bloom just on the energy contained in the plant. If one of those males pops in your room, you've got seeds, bro..