A roll in a Vulcan is certainly do-able, and I think many of us were hoping that they would pull one off before XH558 retired, but the scrutiny of the heritage jet scene after the Shoreham crash meant that such a stunt would have generated a LOT of negative publicity.
Closest we've seen really was Kev Rumens cracking take-off at RIAT 2015 when he pulled her sharp into a right hand turn just after take off.
Really shows what a manoeuvrable aircraft the Vulcan was, deceptively so for its size.

But yes, those pictures...well...I'll wait until the CAA finishes its investigation.