ACFT ON VFR FLT TO UNCTLED AIRFIELD ANNOUNCES INTENTIONS TO DO A STRAIGHT-IN APCH. CESSNA ON TRAINING FLT TURNS IN FRONT OF ACFT.

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I WAS FLYING A BE35 RETURNING FROM MXL; MEXICO; TO CLR CUSTOMS AT CXL. CHKED LCL WX; FOUND RWY 26 ACTIVE AT CXL. COMING FROM SE PLANNING ON STRAIGHT-IN FOR RWY 26. MONITORING 122.8 CTAF AT 1500 FT AND 10 MI GPS ANNOUNCED INTENTIONS. NO CXL TFC ON FREQ. ANNOUNCED AT 5 MI GPS 'BONANZA 5 MI FINAL STRAIGHT-IN FOR CXL;' NO TFC. ANNOUNCED AT 3 MI STRAIGHT-IN; A C150 ANNOUNCED DOWNWIND MID FIELD. ANNOUNCED 2 MI FINAL; C150 ANNOUNCED DOWNWIND. ANNOUNCED 1 MI FINAL; C150 ANNOUNCED TURNED BASE AND WHY DON'T WE FLY THE PATTERN? C150 HAD TURNED TOO CLOSE TO MAKE RWY; ANNOUNCED GOING AROUND AND PROCEEDED TO BLAME US FOR BREAKING FARS BY NOT ENTERING LEGAL PATTERN. WE HAD VISUAL OF C150 WHEN HE WAS TURNING BASE TO CUT US OFF. WE LANDED NORMALLY WITH RADIO DISCUSSIONS WITH PLT OF C150. WE WERE NEVER CLOSER THAN ABOUT 1/2 MI FROM C150. I DO NOT CONSIDER THIS AN NMAC; BUT MORE A CARELESS/RECKLESS ACTION BY THE C150 THAT COULD HAVE RESULTED IN AN NMAC/ACCIDENT. THE FOLLOWING WAS DISCOVERED VIA RADIO COMS WITH THE C150. THE C150 WAS A TRAINING FLT WITH LCL INSTRUCTOR AND STUDENT DOING PATTERN WORK AT CXL. THE INSTRUCTOR WAS ON THE MIKE. HE WAS TOTALLY AWARE OF OUR POS RPTS AND INTENTIONS. HE DELIBERATELY TURNED BASE TO CUT US OFF WHEN WE ANNOUNCED 1 MI FINAL. HE BELIEVED WE WERE IN VIOLATION OF FARS BECAUSE WE DID NOT ENTER A R-HAND PATTERN. (I ASSUME WHAT THIS MEANS IS HE FELT WE SHOULD COME IN ON A FULL 45 TO DOWNWIND ENTRY.) OUR CONTRIBUTION TO INCIDENT: WE ROUTINELY FLY STRAIGHT-IN TO CXL FROM MXL. WE ANNOUNCE OUR POS AND INTENTIONS AS WE DID STARTING 10 MI OUT. WE MONITOR CTAF BEFORE AND DURING FINAL TO ASCERTAIN IF ANY TFC IS PRESENT AT CXL. IF TFC; WE ADJUST OUR APCH ACCORDINGLY INCLUDING FULL R- OR L-HAND PATTERN ENTRANCE. WE BELIEVE THIS IS IN TOTAL COMPLIANCE WITH ALL FARS PERTAINING TO LNDG AT UNCTLED FIELD.