What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The pilot flew the aircraft on a low pass over runway 24 at Merritt field. When the pilot elected to execute a go-around there was approximately 1,200 feet of runway remaining. During the go-around the aircraft touched down briefly (as the runway has an appreciable upslope on runway 24) and then became airborne in ground effects, but would not climb any higher. The pilot then noticed that he had not retracted the flaps. He did so and the aircraft settled back down towards the ground after flying past the end of runway 24. The right horizontal stabilizer struck a large boulder off the end of the runway. The aircraft finally touched down in the clearway at the end of the runway. The aircraft followed the slope of the clearway which angles downhill to the aircraft's left. The pilot attempted to keep the aircraft from going into the wooded area beyond the clearway by attempting a controlled ground loop to the aircraft's left. In doing so, the aircraft slid sideways at a 45 degree nose left angle to the actual path of travel. The aircraft's right wingtip struck a tree at that angle and then spun about a tree coming to rest in the opposite direction.
As the FAA filed it
(-23) THE PILOT FLEW THE AIRCRAFT ON A LOW PASS OVER RUNWAY 24 AT MERRITT FIELD. WHEN THE PILOT ELECTED TO EXECUTE A GO-AROUND THERE WAS APPROXIMATELY 1,200 FEET OF RUNWAY REMAINING. DURING THE GO-AROUND THE AIRCRAFT TOUCHED DOWN BRIEFLY (AS THE RUNWAY HAS AN APPRECIABLE UPSLOPE ON RUNWAY 24) AND THEN BECAME AIRBORNE IN GROUND EFFECTS, BUT WOULD NOT CLIMB ANY HIGHER. THE PILOT THEN NOTICED THAT HE HAD NOT RETRACTED THE FLAPS. HE DID SO AND THE AIRCRAFT SETTLED BACK DOWN TOWARDS THE GROUND AFTER FLYING PAST THE END OF RUNWAY 24. THE RIGHT HORIZONTAL STABILIZER STRUCK A LARGE BOULDER OFF THE END OF THE RUNWAY. THE AIRCRAFT FINALLY TOUCHED DOWN IN THE CLEARWAY AT THE END OF THE RUNWAY. THE AIRCRAFT FOLLOWED THE SLOPE OF THE CLEARWAY WHICH ANGLES DOWNHILL TO THE AIRCRAFT'S LEFT. THE PILOT ATTEMPTED TO KEEP THE AIRCRAFT FROM GOING INTO THE WOODED AREA BEYOND THE CLEARWAY BY ATTEMPTING A CONTROLLED GROUND LOOP TO THE AIRCRAFT'S LEFT. IN DOING SO, THE AIRCRAFT SLID SIDEWAYS AT A 45 DEGREE NOSE LEFT ANGLE TO THE ACTUAL PATH OF TRAVEL. THE AIRCRAFT'S RIGHT WINGTIP STRUCK A TREE AT THAT ANGLE AND THEN SPUN ABOUT A TREE COMING TO REST IN THE OPPOSITE DIRECTION.