Might be a bit much to sack him over this, but it seems '07 is a bad year for Enge. First there was is crash at St. Pete's, then all the rubbing at Lime Rock and finally Mid-Ohio. Saw him crashing at Eau Rouge during the Spa24. He just did what all others did, going over the curbe further and further every lap, untill he finally hit the wall.
Salo maybe shouldn't have bashed Enge out of the race -and afterwards admit he did that purposefully!- at Mid-Ohio, but I think I can understand why Salo did that.