The club have until 4pm on Friday to respond to the charge.
"If people cross the line, then of course you have to be charged, but I think at that moment we were fighting to keep that clean sheet," Hooiveld said.
"We had fought the whole of what was a tough game and tough circumstances, then they were awarded a penalty which in our eyes was not the right decision.
"Then the emotions went a little bit high and maybe we got a little too close. I think whatever happens after that, it is not up to us to decide."