I don't mean to stir up any bygone shit, but when I think of maybe the biggest, most unexpected and inexplicable surprise I witnessed myself during my still pretty short career here, it must have been when, out of the blue in Season 57, the new Anchorage Armada general manager duo Gabe and Bear were suddenly accused and also right away punished for creating a toxic environment in the Anchorage locker room. 
The punishment came on the heels of another one to one of the guys in there who had been reported for an instance of excessive trolling, which seemed fair enough in itself. But to anyone in the locker room itself, these charges against Gabe and Bear couldn't have been more preposterous and were indeed later shown to be based on selectively manipulated out-of-context screen captures that had been leaked to the SMJHL head office with later admitted malicious intent by one of the members of the locker room for whatever reasons they had for it.
It turned out to be an embarrasing debacle of justice being meted out under false assumptions and based on one-sided information, as under the manipulative gaze of the accuser and their presented 'evidence', nobody from the head office had even allowed Gabe or Bear the chance to explain their side before the punishment was already levied. 
Fortunately their appeals to the punishment were later accepted and the punishments rescinded for the most part when additional evidence was provided to show the earlier manipulation of justice for what it was.
This was truly the oddest and most surprising turn of events that I have witnessed in the SHL thus far.