Dropped camera - zoomring now turns very heavily

I dropped my RX100MkIV from about 10" height during holidays. Though nothing visible bended, the functional ring around the lens now turns very hardly. Seems to be bent on the round counterpart inside. I am familiar with taking apart this camera, but have no clue how to disassemble the zoomring form the metal front housing. Anybody got an idea how to do this? Thanks a lot!