Yep, that was it. Tapped on the box that the board is in and it stopped. This is not the first time it got stuck, but this is the first time I had to get to the board to make it stop. Unplugging had worked before. The bad part is we cannot leave the house with it running.
Looks like this is the only board for this dryer. I see an electronic control board for this model at around $280.