Restricting Delivery Methods

Hello!

I have a need to restrict delivery methods per show.  I realize that the standard way of restricting delivery methods is through MOS, unfortunatly I need to drill down further than MOS.

Has anyone found a way to restrict methods per show outside of the MOS parameter?  I am certain super sneaky web code is probably the answer, but I would love a solution that applies internally as well.

We have a huge on sale coming up that requires tickets purchased on line to be will call only...it's looming, so any help would be greatly appreciated before we try to create a crazy fix that won't solve the problem long term.

Thanks!