Hi Spidy,
My GSO 2" diagonal had a similar arrangement & it was tighter than tight...
I ended up having to use a set of grips & even with some padding, I managed to do some minor damage to the aesthetics of the knurled ring but, that was the only way it was coming off...
I didn't post earlier as I wasn't sure if the Celestron one would be removable but, after seeing Don's post, thought I would share my experience with the GSO one.
Cheers
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