I don't think it would be that hard to script honestly. Script to move behind the walls, and script to rez the dudes if you are standing next to them (which is just a right click and can be done while casting). You'd probably have to play a healer to get 2 of the mages, but that wouldn't be a big deal as there isn't that much going on in the encounter.
Come to me is working now right? (from the mcp button) Do they go to the targeted person? Like if I target myself they run to me? If so it would just be a come to me behind the wall then joust in when the mob is back in place?