They missed Garland's scoring more than anything else. Wade didn't score in the second half until a garbage time layup. Windler, Okoro, Dotson, and Osman contributed almost nothing offensively. Prince is worthless. Sexton didn't have a great second half, but he was the only one they had to guard.
The one bright spot would be how Sexton played when he has some help. 21 and 10 until Garland went out. You don't have to worry about how he would play with a good team around him. But when he's out there with Dotson and Osman, the defense focuses exclusively on him.