Not sure, might break the tank but you *could* try this ... "unpile the live rock" and spread it out on the bottom of the tank, drain as much water as possible and still keep the rock covered and just enough for the fishies, etc. Gently lift one end of the tank up only high enough to begin working a piece of 3/4 inch ply under it. The plywood should be large enough to overhang the tank by about 6 inches all the way around. Sloooooooowly move the tank as close as possible to the stand and gently slide the tank off the plywood and onto the stand. That being said, if I were forced to do this I'd probably use the opportunity to do some housekeeping and drain off enough water to support the lifestock into a *CLEAN* container, move the rock and critters into the container (caution of things that cannot stand being out of water for even the briefest of periods, i.e. sponges, some breeds of starfish etc.) drain the tank the rest of the way and make the move.
Just my .02, I really can't think of any real easy way of doing this sorry, good luck in whatever you decide.
Later,
Paul