You can cut with out the hit. At least that's how I read it.

Signing bonus money accellerates to the year you cut them. It can no longer be spread over the life of the contract once you terminate the contract.

Cutting Will Smith only saves 7 million, not 14.
Cutting Vilma only saves 6 million, not 8.6.
Cutting Harper only saves 4 million, not 7.
Cutting Hartley only saves 1.1 million, not 2.6

And then you have to add the cost to replace those players.

In regards to Vilma, he's already been replaced by Lofton. Replacing him as an outside backer probably won't be that hard, especially with the shift to a 34.
Having a better pass rush would also help out harper, so maybe keep him around for another season to see if he improves?

micky has his work cut out for himself this off season