Yes, you can separate the tracks, although you're probably going to have to convert them to audio. The easiest way is to solo one drum element at a time using the solo buttons in EZDrummer's mixer, and bounce each soloed drum or cymbal to disk. You'll end up with audio tracks for each of the separate elements that way, that you can import back into your session (make sure you bounce starting from the very beginning of the sequence so that they'll all line up).
If you want to keep the drums in the MIDI domain, it means duplicating the track once for each separate element you want to mix, and then going into the MIDI editor and cutting the other drums notes away, so that you leave just one drum or cymbal per track. For example, for the snare you'd go in, select every note other than the snare hits, and cut them. The problem is that you'll need to have to have a separate instance of EZ Drummer for each track, which can use up a lot of CPU. So if you're going to do this, maybe only split it up into kick, snare, toms, and cymbals. I would also recommend making a safety copy of the original track in case you cut too much accidentally and mess up a track. Good luck!