Lizard1977:blackjack17:
I would cut the wire tie down and screw the base plate in with something like this.
And get the moisture sorted first.
I like that idea but I can't see what the tie down is actually doing. I assumed it was just embedded in the concrete and then wrapped around the timber and held in place with the staples. I can't see any base plate to screw into unless it's under the frame.
The wire was likely embedded into the concrete when wet. Cut it off at the surface and then screw through the timber base plate and then through the concrete. Then insert the base plate screws (assuming you don't have a ramset gun)