Except all the numbers say the opposite. The team is better on offense when he's on the court and has been all season. The reasons are simple:
You get more disruption, allowing you to get layups in transition
You get more stops, so you don't have to play against the opponents set half-court defense
You get more offensive rebounds which usually result in higher percentage shots at the rim
Conversely, when's he's off the floor opponents score more, so you're forced to play in the half-court
Unless you're suddenly bringing Vinnie Johnson off the bench to jumpstart the offense, there's no one on this team worthy of sitting down a first team All-Defensive player. And even if you did, a scorer only can only match the opponents scoring. A disruptive defender like Ausar gives you more possessions - that means taking away a bucket from the opponent and getting an easy one for yourself. That's been their identity all season.
When you do wind up in half-court sets it's simply poor/lazy coaching to leave him in the corner when team's are sagging off of him. He can be the screen setter or getter in the pick and roll, put in the dunker spot, be the DHO hub (Draymond), used in cuts, or simply play him more minutes with Stew at the 5.
It's really not that hard. He's literally the best perimeter defender in the league and a freak athlete. He's also a very good passer and an decent enough ball-handler. If JB had any idea how to run an offense or adopt a strategy mid-game, this wouldn't be a problem. But we're seeing what Cleveland saw. He's great at building a regular season identity, but his in-game rotations, strategy, and decision making leave a lot to be desired. I truly believe it cost us the series against NYK last year and it could very well cost us this year if it continues.