You can certainly lodge a complaint with him, though, to the extent its that he didn't stand in front of a camera and own the issue, I think that might be better directed to the Mayor.
@DSC did a good job (see post on previous page) of getting an explanation for what was/was not done here. That really lies w/Transportation. I'm not sure the staff on the ground actually made any mistakes as such in the circumstances they found themselves. The automated gate closing system didn't work. Closing the gates manually required staff who weren't on site, those who were had barrels to deliver the same effect.
Should the system have worked, of course! Was the communication system, and the choice made as to who to train to manually operate the gates inadequate, yes, absolutely.
Those choices lie with Transportation. So you may wish to take it up w/that department.
The division’s services are provided through three main areas: road and sidewalk maintenance transportation operations and safety public right-of-way management