Why is this "Plan B?"

Shared by timlauer
Tom Hoffman points to a Washington Post article about DC contract provisions for firing and transferring teachers... provision that have been part of their contract for years...

So Michelle Rhee is going to start enforcing the existing D.C. teacher's union contract's provisions on firing and transferring teachers, in part with administrative support from her foundation friends. Fair enough. What took so long? I mean, what's the point in making big noise about changing the contract if you don't take advantage of the power you've got in the current one?