Bon Jovi is currently on tour, but it looks like they will have to continue without Richie Sambora. Sambora walked out on the band this week after tensions rode high between him and Jon. Sources say that it had nothing to do with Sambora's past substance abuse issues(he has been in and out of rehab for years). They say that Jon and Richie just couldn't get along and Sambora always felt Jon treated him "like crap". While performing without Sambora in Calgary the other night Jon said, "I had two choices: pack up and go home or give you everything I got ... Richie Sambora won't be performing for a while. If there's ever a night I need you, it's tonight, Calgary!"