I wonder if he had the feeling he'd never be the "#1 guy" at Roush, what with Martin being there and MacMurray's much-ballyhooed slide into the #6, defending champ or not. Plus I'd bet Miller's throwing a boatload of money at him and he just couldn't pass on it.
“To get ass, you’ve got to bring ass." -- Roy Jones Jr.
"Your input has been noted. I hope you don't take it personally if I disregard it." -- Guru Zim
Did you see that article with Felix Sabates ripping on Jack (I'll try and fish that up and paste it in here as an edit). Sounds like he was none too please that Jack stole McMurray from Ganassi and essentially said Jack was getting a bit of his own medicine, You don't often see the owners ripping on each other.
If Junior was really like his old man, he would have no problem owning up to the crash and let it be known as a warning to the others and I (and I think most people) wouldn't have had as much a problem with his actions.