There seems to be no in between with Matt. He's only given up runs in 5 of his 21 appearances, 4 of those were 2 runs or more.
Fans remember those games like the did when guys like Thornton would do the same, and they'd have it locked in their minds that the guy is awful.
I think Matt, even after this game, is a guy worth keeping around. He'll have games like today, but more often than not he'll give you a solid inning or 2.