Welcome Dave!
Had that problem more times than I should admit.
Easy remedy though. I would start by removing the
arbor from the plate. You will need to remove
the countwheel from the arbor. Then you can use a
crows foot or any split stake to tap either the wheel
or the collar back or completely off of the arbor.
I prefer removing the collar
unless the wheel needs to be repositioned for some reason.
Here’s a pic of a crows foot set up for the same operation.

- Crowsfoot Stake
- A3501011-E784-4970-8D27-ADA90F87271C.jpeg (11.6 KiB) Viewed 137058 times
Hope this helps Dave,
Best, Phil