Sorry, I missed the MUF question when you first asked it.
The story behind that name is long and colorful, to put it mildly. Gist is that the project was started during OIF I, then held up by Congress due to the unit in question overexceeding its authority to commit government funds, according to the bean counters.
The money is there - its all about what you are spending it on. The bean counters said it was too expensive to be an MWR center. So now its a MUF, and priority for use of the gym always goes to sleep overflow Soldiers and the theater for unit briefs / classes.
In reality though, it's really just another MWR center - since EVERY MWR center is used for mission related things as needs arise. This made the bean counters happy, though.
Funny thing, the Major who managed to get funds released to complete the project (had been held up for a year or so) didn't really expect us to use the word "MUF" - it was just something his team pulled out of their ass in wrestling with the dicks in DC, since they were so humng up about it being too much money for MWR. These guys were assigned to FOB Diamondback, and really got a kick out of it when I told them the fact that the sign out front actually read "MUF."
True story: during construction, a TCN construction worker fell off the roof and was seriously injured. He was the first and only reported incident of a "MUF Diver."
Carry on.