Yeah, I think humanize in EZ/SD is a random velocity thing. With well-calibrated drum triggers it shouldn't be necessary.
For quite a while, Cakewalk/Sonar's quantize function has included a "Strength" parameter. It's a percentage. It calculates how far it would have to move the note in order to be right on the grid, and then moves it Strength% of that distance. It is a great way to keep some of the feel of a live performance while tighten things up. Play with it a bit to see what value works best for you. I will sometimes apply different strengths to different drums. Maybe the kick should be really tight - like 95%, the hats/ride can be a little looser, and maybe the snare is actually just fine without quantize.
But how badly does it really need to be on the grid? If you were recording a whole band, or even just a couple other instruments, you need to listen to the drums in that context. Turn off the metronome and listen. It is quite possible that everybody else followed the drummer's loose interpretation of the beat, and quantizing the drums will pull them away from the rest of the band and ruin any groove that may have been happening.