I have a few of those and love them.
Damp malt could mold very easily. I'd get it out of there and spread it out on a tarp or something to make sure it's dry, maybe blow a fan over it for a while and rake it back and forth. Air out the vault good before returning the malt to it.
If any is really wet you could roast it as @brew_cat suggested.
I'd also plan a bunch of brew days and try to get through that malt ASAP.