It had already been a busy day of news and games in the NFL on Sunday. Then a video started circulating on social media that appears to show Chris Foerster, the offensive line coach for the Dolphins, snorting white powder while talking into the camera about a woman before he heads into a meeting.

It's unclear exactly what he was snorting, but it sure looks like cocaine. It's also unclear when the video was made, though the Miami Herald reported via a source that it appears he is in a team office at the Dolphins' facility.

On Monday, Foerster resigned from his position.

"It'll be a while before we can do this again. Because I know you have to keep that baby," Foerster said at one point in the video. "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."

Foerster is a longtime offensive line coach whose first NFL job came on Dennis Green's staff with the Vikings. He worked for the Vikings in 1992 as the offensive line coach and from 1993-95 as an assistant offensive line coach and tight ends coach. He was also on Green's staff at Stanford prior to joining the Vikings.