SO RPT ON LOSS OF ACFT CTL DURING PIC'S ACFT MANEUVERS.

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LEG FROM PHX TO SLC INBOUND SLC; ATC ASKED FOR A R 360 DEG FOR SPACING PURPOSES. CAPT (FLYING) TURNED R. I; FE; WAS IN THE MIDST OF COPYING ATIS; GLANCED AT AIRSPD AND ASKED HOW SLOW WE INTENDED TO GET IN THE TURN; 250 KIAS WAS OUR SPD. CAPT ADVANCED PWR LEVERS. I WENT BACK TO MY ATIS INFO. A MIN OR SO LATER; THE FO SAID; 'HEY I THINK THAT'S BUFFET.' I'M NOT SURE IF 100% MAX PWR WAS ADDED; IT WASN'T CALLED FOR. THE ACFT LOST AILERON EFFECTIVENESS; THE CAPT DISENGAGED OUR AUTOPLT AND ATTEMPTED TO RECOVER THE JET. THE FO DECLARED AN EMER AS WE WERE DSNDING. I TURNED ON THE SEAT BELT SIGN AND SCANNED OUR INSTS. AT ABOUT 165000 LBS; OUR SPD BLED TO 160 KIAS; NOSE SLIGHTLY ABOVE HORIZON; APPROX 40 DEG ANGLE OF BANK AND IVSI (VERT SPD INDICATOR) PEGGED DOWN AT 6000 FPM. I WARNED THAT WE WERE LEAVING ALT RIGHT AFTER BUFFET; BUT IT SEEMED THAT AN INADEQUATE RECOVERY ATTEMPT WAS MADE. WE LEVELED AT 26000 FT MSL. CTR ASKED THE NATURE OF OUR PROB; AND THE FO BLAMED IT ON TURB; CLEARLY MISSTATING THE PROB. THE FLT CONTINUED WITHOUT EVENT. CAUSE: CAPT'S SCAN PATTERN WAS EXTREMELY DEFICIENT. THIS LED TO A LARGER PROB WHICH WAS IMPROPER HIGH ALT RECOVERY PROCS FOR STALLS. RECOMMENDATIONS: IF POSSIBLE; PLACE MORE EMPHASIS ON UNUSUAL ATTITUDE AND STALL RECOVERY TRAINING DURING RECURRENT. SPECIFICALLY; RETRAIN THIS CAPT IN THIS FLT REALM. ADDITIONAL COMMENTS: I HONESTLY BELIEVE THIS WAS AN ISOLATED CASE AS IT IS THE ONLY UNINTENTIONAL STALL I HAVE EVER ENCOUNTERED IN MY 12 YRS OF FLYING EXPERIENCE.