Smoking a joint isn't a strike, it's just a fine.
But Orton has been suspended, or otherwise gotten in trouble, more times than anyone on the roster. He's only on one strike because they want him to be.
I think he got lucky and screwed up before they installed the 3 strike policy (that magical time between Eddy dying and Benoit killing his family) so they just ignored that stuff and started over.
He's got 9 friggin lives.