Oh, Screech. We thought he'd turned things around since appearing on Celebrity Big Brother back in 2013. There was the porn incident, but - again - things were going OK. Now he's been arrested in Wisconsin for violating his probation... after that incident which occurred the Christmas of 2014. 

According to Time Magazine: "Diamond, 39, served three months in jail earlier this year for his involvement in a bar fight that resulted in a stabbing on Christmas Day. Jurors found Diamond guilty of carrying a concealed weapon and disorderly conduct but not guilty of the felony charge of reckless endangerment."

Officials at the Ozaukee County Sheriff’s Office confirmed that he was in their custody, but wouldn't provide any further details.  

In a recent interview with former Saved By The Bell co-star Mario Lopez (he now works for Extra), Diamond had said he was turning over a new leaf: "I want to put the tomfoolery and malarkey behind me. Time for a change."