Meanwhile, Simon apologized to Hollweg, the league and Islanders fans in a statement released later Saturday.
The league suspended Simon indefinitely after he drilled New York Rangers forward Ryan Hollweg with a two-handed stick swing to the face in a game on Thursday night.
"After watching the tape the morning after Thursday's game, I was disgusted," Simon said. "There is absolutely no place in hockey for what I did."
Hollweg took a few stitches in the chin but was not seriously hurt.
Simon also said in the statement that he suffered a concussion when he crashed into the boards and does not remember what transpired.
"I do not remember much about Thursday's incident," he said. "When I saw the tape on Friday morning, it explained a lot to me when I saw the look on my face after being hit into the boards. I was completely out of it. When I met with the media about 30 minutes later, I still was not feeling well."
Simon, who said he would reach out to Hollweg in the near future, has 27 points (10-17) and 75 penalty minutes in 67 games this year.
"What you saw Thursday is not the person, player and competitor that I am," he said. "I know my teammates and opponents over my 14 years in the NHL understand that."
It was not clear when the league would announce its final decision on the length of his suspension.