The Utah clips show a Hayward that at times looks like he's springing off a trampoline when taking the ball to the rim. His season, he's plodding at best. You need a strong core to make vicious forays to the rim over big, tall, athletic defenders. This season, he's had to nudge his way, with predictable results - finishing off .625% at the rim this year with 70% assisted, to .691% at the rim his last season with the Jazz, with only 60% assisted. His non-layup two point shooting percentage is up a bit, which makes sense with all the room out there on the court now that he's not the first option. Back issues would explain the dip from three, as would be adjusting to being a bench player. The guy has a great shooting stroke.
Watching him in person as a fan is painful. Almost as bad as the lack of his former physical tools is his lack of confidence. I did see him light up the Wolves in Boston, and he was scintillating - decisive, confident, intelligent play where he imposed his will on the game. If he could get within 90% of that player by the playoffs, the Celtics could run deep.