The chainring is located against the bottom bracket by the chainring lock ring, so the extra couple millimeters of crank axle end up on the non-drive side where the adjustment collar has plenty of travel to take up the extra length. In theory the left crank arm is spaced further out by a couple...
Has anyone removed the chain retention roller when riding cross country?
Removing it would still have the chainring with about a quarter wrap of chain, which is the same amount that a lot of high pivot bikes successfully use. It would also make it much quieter, which would be nice.
Of course...
You're kind of stuck with method already listed since the cranks need a Cinch interface, and only Race Face makes those.
Remember, if you have the Ride cranks they're actually a 175!