There is just enough room to tilt the grinder back to allow access to the contact wheel.
At least for now.
Should more access be needed in the future, that interfering wall will receive a redesign.
Maybe a shorter wall, or maybe a hinge of a type.
To respond to an earlier post regarding the efficiency of the locking caster wheels, they do prevent unwanted movement from "normal" pressure. Should more resistance to rolling be required down the road, we have several wheel blocks that will do the job.