Of course, I was forgetting it's only around 4pm over there - I was thinking 'gee, he must be awake and alert to do that past midnight' then remembered the time difference
They will latch in on the exhaust side after straight fueling. You can try very carefully getting them out with a good soaking in penetrene before attempting removal
Don't try to stick a flat blade under the ring, try to use your hands to push the springiness to the seized spot to try to pop it on its own if that makes sense. a little light help of screwdriver is alright, but don't go twisting hard
And to answer what might be your next question, there is little chance of bottom end bearing damage - they are tough old things. Plus, yours should have the needle roller little end (as opposed plain to sintered brass) so thats fine as well.
I would also start soaking the blade plate nut in oil in preparation just incase you have issues with the gudgeon
Regards