Well, the magic phase is over. Here is the updated map. Turns out I can only recover 2 gg, as I've run out of room. Shooting - Banshee into the unit engaged with my general (first) and the ME into the unit engaged with my other skeletons (right)
The back end of the unit was in the front arc, but the engine couldn't make it until the gg moved. Granted, its a huge risk because your unit has the flaming banner, but it was just sitting there being boring. Why don't we do that fight first, while we're here.