they are definitely males.. good thing is, if you have any others going and they haven't shown sex yet, they maybe females as males tend to sex first..
if you don't want to chop him down, males are great to try all kinds of crazy stuff on without the fear of screwing them up and having them not make it to harvest.. think of all of the crazy things that you may have read about or thought about doing befoe, but didn't want to screw up a good plant, now is the time to act on them and not have to worry about it too much..
someone else had made a post like this like the day after i just chopped my males down, and i wish i had thought about it or was told about it before i did so..