I took the wheel apart last night. I finally found a YouTube video explaining that these are called CONTINUOUS RING wheels, not split wheels. It’s a two piece design, and you just use a pry bar to pry one side over the wheel, then the wheel slides towards the other side to release… the actual lip on the continuous ring that catches on the wheel lip has a section on opposing sides that is reduced to the size of the ring face diameter to allow this to slide over the wheel lip. Simple! you can see from these photos how it works! Cool design! I was merely afraid to damage this, not afraid to work on it. Now that it is apart, I am very confident on how to reassemble safely!