mac or pc ?
you can do a sysex midi dump(i think) vst should support this and then send it back when needed. or you can actually write the stuff in vst and use the machine as a sound module. if you hold the white play mode button down whist turning it on it goes into that mode or you might have to record the sounds via an audio card or record the actual midi data from each sound arrange and send back to machine i'm sure there are other ways.