It's not something I'd be keen on.
If you don't need the 32t, there are a few 11-up 8-speed cassette options (11-28, 11-30) but obviously the spider of your XTR cassette stops you just ditching the 32t and adding an 11.
9-speed cassettes come in 11-32 (11,12,14,16...) - you'd need a new cassette, chain, and rear shifter. A bigger chainring might be another option.