I was kicked out of the VR(T) when I was 50! (after 36 years service as cadet and adult staff) My wingco decided I wasn't attending the squadron often enough, I was Wing Gliding Liaison Officer (went to the VGS most weekends) and worked shifts but he wouldn't listen.
It seemed to me then (late 90s) that the policy was get rid of the old lags like me and appoint younger ex-cadets as squadron officers.