IF it is a hermie, then yes, it has the hermie genetics in the pollen! Hermies show up as small male parts on an otherwise female looking plant with pistil hairs. If it's ALL balls, then it's just a male!
IF it's not a hermie and JUST a male, then I would definitely bring it inside to collect the pollen. Make sure that you clean your room from ANY pollen on walls, equipment, etc... Otherwise you could have unexpected seeds in your next crop! Water neutralizes pollen!
STS works good, but a product called ElitexElite is a ONE time application for feminized seeds! It's quite spendy, but probably well worth it. $60 for 2ml.... enough for 3-4 plants. I'm going to try that method!
You can try putting a branch in a cup of water. I've heard of it, never tried it, so I don't know if it works. Let me know if you try it.
Good luck and happy growing brother!