Obviously we are not going to be allowed to speculate on anything potentially criminal or exploitative, or the thread will get pulled.
However, I think given what has been allowed to go on for far too long with other big personalities in the past and the current backlash the BBC are facing around that and on various other levels (Gaza etc) means that people are starting to desert the licence fee in unprecedented numbers. Confidence in, and respect for the BBC is at an all time low.
My hunch is that if something deeply unsavoury about SM is about to come to light, the BBC wants to distance itself from it before the shit hits the fan, not afterwards, as has usually been the case.
When does the new blokey officially take over? Perhaps this is his influence already. Starting tough, as he means to go on?