The Miami Dolphins’ offensive line coach, Chris Foerster, resigned on Monday after a video was posted online showing him snorting a powdery white substance.

In a statement, Foerster apologized and said he accepted “full responsibility for my actions.”

“My sole focus is on getting the help that I need with the support of my family and medical professionals,” he said.

In the video, Foerster can be heard saying: “Hey, babe. Miss you. Thinking about you. How about me going into a meeting and doing this before I go.”

He then leans over and uses a $20 bill to snort two lines of white powder. “What do you think? Crazy?” he asks. Later, he says: “But I think about you when I do it. I think about how much I miss you. How high we got together. How much fun it was. So much fun.”