The Sounders fell behind in the 28th minute when John Thorrington netted for the Fire but leveled thanks to Fredy Montero's 36th minute effort.
The win was complete when Montero grabbed his second in injury time to give the Sounders maximum points in former star Freddie Ljungberg's return to Qwest Field, delighting Schmid.
"Obviously we're pleased with the result. And we're pleased with the fact that the history in this league is if you go down a goal you generally lose," he told the Seattle Times. "So the ability to be able to come back after going down on the penalty kick call - which I haven't seen on the replay yet so I don't how it was per se - but obviously it was a call I thought at the time against the run of play. I thought we kept our composure in terms of defensively we kept our shape.
"They had some good speed but I thought we dealt with that well. I thought we kept their players in check pretty much all over the field which is good defensively. And offensively I thought we created some things coming forward. There are still a little bit better that we can do. We can always do better. Certainly our two goals were very good. Great cross by Tyson Wahl on the first goal and certainly a good ball from Sturgis and good run from Fredy Montero on the back post on the second goal so we are very happy."