he's sitting 5 feet back so lebron can't really blow by him with speed because of the cushion. then we get into the help defenders just sitting in the paint.
as far as adjustments go on offense. more off ball movement. too much passing and just standing, instead of making a pass and moving away from the ball. when lebron posts kawhi or green, he has to be extra aggressive and just try and bully them. force the defense to make a play. if diaw guards him again, they need to run lebron off some screens and get him a the ball at 15-20 feet before diaw can set up in front of him. run some plays with lebron screening for ray allen so he can get clean looks as well. bosh needs a couple of post ups, or catches in the paint to work with. most importantly, i think the heat need to get out in transition more so the spurs can't get into their defensive sets.