Originally Posted by kata guruma
control, you mean still holding on to his body and maintaining control when you hit the ground?
That--I mean, you can't lift a guy up and just drop him, you have to come down with him and you have to let him down "with control", i.e., not just letting momentum and gravity take over; let him down gently, basically. They say, "with control", but basically, it means, let him down gently. Get a guy in the air, you have to basically set him down nicely.
Your coaches should explain all this to you though, if you are competing in folk style. If not, they are really taking a risk that you would get DQ'd in a match. Refs are generally quite stringent on the "no slam" policy.