The majanos I've seen are not quite like aptasia as they don't seem to retract as much or nearly as quickly.
We got a few from a certain LFS. The wife and I pull them from the tank, got a big strong light going, and injected each one with a vinegar filled needle from Walmart. Tot cost, $2.25
Softie corals should be fine being out of the water for a few mins or do it on a water change day and use the waste water as a holding tank until you are ready for the destroy mission.
None of my zoas seemed to mind much.