Yeah, right.
They may have turned off their recorders, but I can guarantee you that they not stop listening. If anything, they pricked up their ears.
I know a few cops. If you don't think they cheat whenever they can, you're very naive.
(Not you persoanlly, RB. You generically.)
That and over zealous district attorneys are of great concern to some folks, especially those found guilty for crimes they didn't commit.