Dynamo Film Session: Why was Tyler Deric so mad?

There some goalkeepers in MLS — cough, Bobby Shuttleworth, cough — who tend to go a bit crazy when their defense makes a mistake and they actually have to do something. I, personally, love communication and all that, but hate it when keepers feel the need to lay into their defenders. I just don't see how screaming in someone's face for a couple seconds solves many problems.

I've never seen Tyler Deric as the type to go berserk on his teammates. He did that, however, on Friday against Orlando City.

Let's find out why:

The play in question starts with David Mateos playing out of the back for Orlando:

Mateos (circled) does not appear to be under any pressure at all.