While I don't doubt all that, I can't help but recall reading how they used to leave a hanging body on George's Island to warn all incoming ships that Halifax was a strict military town, so going by that I felt that on an active military establishment as the Citadel was in the 18th and 19th centuries, that such activity wouldn't have been tolerated.
But only those who were there would have known...
Regarding the VE day riots, my understanding (from what I have read and from my father's first-hand accounts) is that pretty much anything and everything happened, but it was only short lived.