I'd have kept him in one more inning then pulled him before 90 pitches.
But as a thought experiment...let's say leaving him in for one more inning absolutely guarantees the Orioles win last night and keep division hopes alive, but if they don't win the division it makes it 1% less likely that they win Game 1 of the WC Round as he'd be on less rest than he's used to this season after pitching a normal workload. What's your move in that scenario?
Just 1% less likely, then I'm taking that deal all day. Full disclosure my judgement is clouded by my disdain for the Yankees. Winning the division wasn't even my biggest reason (they blew that opportunity in the prior weeks) I just didn't want the Yankees to clinch against us, yes I know that's silly. Having said that, the playoffs are what matter and if this helps Burnes pitch better next week then great but in the heat of the moment I don't like it.