House Speaker Robert DeLeo has been on the offensive recently, and very little of it has relied on charm. DeLeo has made the rounds with television reporters. He's battering the state judiciary's point man on corruption inside the state Probation Department, and swiping at one-time legislative lieutenants. DeLeo's current offensive isn't all that different from the fights he was waging two or three years ago. He's still surrounded by clouds from the mess in Probation. And he's still arguing that, because he hasn't been called a crook in court, he's a choirboy.