The two coaches both left their own areas to shake hands following a poor challenge by a DC player on one of Houston's but referee Alex Prus decided to eject them despite them showing sportsmanship.
"I kind of gave him a heads up, apologizing for the tackle," said Olsen. "It was a bad tackle, and we went to shake hands because he yelled. I went over to shake his hand, he came over towards me, to shake hands, so I got thrown out. That's what happens when you shake hands."
For the record, Houston won the clash at the RFK Stadium 3-1 despite going a goal down in the 29th minute.