The storage will be unzoned in the next few days so I will see what happens when that takes place. I can't mess with the DS cluster as it is production. The host we are discussing just needs to be relocated and requires different storage and DS clusters zoned to it.
And like you, I cannot find any way to disassociate the host from the DS cluster. I am hoping the zoning change will do the trick and will post back what I find out.