We're sort of in "line up and beat down" mode. Which is OK, but we want to have somebody (a striker is probably most feasible) on top of their caster, and, to the degree that we're engaged with their tanks we'd like to be flanking them.
Here are some tactical choices we could make...
Diabolic Grasp --> curb stomp
DG to pull one of the hobos in the way two s (hobo 3 would move sw se, hobo 1 would move s se), so the wind up next to Yanwer on the east. The three melee types flank and curb stomp.
Problem: Yanwer have to teleport out and lose LOS to the caster, or else he would be pinned and unable to do ranged stuff until the stomping is finished.
Paddy cake with the warcaster
rogue gets past hobo 4 (hypothetically could be moved with diabloic), and rushes warcaster. Support with frigid to grant combat advantage and set up a quick kill. Then we surround and slaughter.
Problem: Rogue's potentially pinned up north among defenders.
Solution: Can we get a defender up north with him?
(In the right situation Yanwer could teleport up there, but that would probably necessitate using my daily for defense.)