God... I'm so right about that though.
Two of the identitcal gunmen are unaccounted for in the evidence, whether it be physical evidence through their empty garbs, or accounts from the worker that led gunman five to the vault it seems those two didn't dissipate and instead left physically... Further, where could the clock have gone? removing something that big, and attached to the wall no less would require more than average personal strength.
This opens up so much. Too much even, oh hell... There's a chance Gunmen Five and Six were not only living but one or both of them could've had some kind of supernatural power. But then how does Mr. Kells fit into this... He clearly is involved based on his actions in the head banker's office. Oh this opens up so much... God, Stealing time though.
The equivalent exchange property of most paranormal kinesis insists whoever did this gave up a lot to be able to perform this feat.
you'd have to give up something big for that. Why'd they even want the clock, was it that worth it?