It was one of those historic moments when long-held truths simply vanish, like another Phil Kessel scoring drought. Yes, Tomas Kaberle may indeed waive his no-trade clause. And, yes, Kessel can indeed score against his former team. And score. Period. The Leafs upended the Bruins 4-3 in an admirable display of determination and strong goaltending Tuesday night. And Kessel not only scored his first goal in 15 games, he potted two, rattled another shot off the post and came close on several other occasions.