It's a week after the comment—the off-the-cuff, spur-of-the-moment comment that got him into so much trouble—and Lt. Bob Kroll is still trying to explain why he said it.Sitting at his desk at the Minneapolis Police Officers Federation (he's vice president of the union), Kroll wears a Minnesota Wild jersey, sports a neatly trimmed mustache, and has the kind of build that wouldn't be out of place on an NHL rink. He speaks bluntly, and occasionally blushes with embarrassment.It all started at a department ethics class, with about 20 other police officers, at the Minneapolis Northeast Armory....…It's a week after the comment—the off-the-cuff, spur-of-the-moment comment that got him into so much trouble—and Lt. Bob Kroll is still trying to explain why he said it.Sitting at his desk at the Minneapolis Police Officers Federation (he's vice president of the union), Kroll wears a Minnesota Wild jersey, sports a neatly trimmed mustache, and has the kind of build that wouldn't be out of place on an NHL rink. He speaks bluntly, and occasionally blushes with embarrassment.It all started at a department ethics class, with about 20 other police officers, at the Minneapolis Northeast Armory....WW…