The aircraft owner stated that the purpose of the flight was to obtain 5 hours of transition training in the tail dragger and accomplish a BFR. After departure, the CFI had the pilot perform airwork maneuvers enroute to the Ramona area. The pilot said that a light oil film had developed on the windshield during the airwork and a decision was made to land at Ramona to clean the windshield and practice takeoffs and landings. Intending to make a three point landing, the pilot said that a 'slight bounce occurred on touchdown' and the CFI told him to add a little power. The pilot said that he complied and then the CFI told him 'no,' and 'yanked the throttle off.' The pilot said that after the CFI reduced the power the aircraft 'went wild and turned sideways.' The pilot further said that the CFI 'grabbed the controls' as he reduced the throttle to idle. According to the pilot's report, the CFI had only 11 hours total in the Cessna 195, with only one hour accrued in the past 90 days.