2009 BMW K1300 S Engine Problems

I WAS DECELERATING AND DOWNSHIFTED TO 1ST GEAR AT 4 MPH, I PULLED THE CLUTCH IN AND COASTED TO A STOP THEN THE ENGINE STALLED. I TRIED TO START BUTTON, BUT THERE WAS NO CATCHING. I PRESSED THE START BUTTON AND ACCELERATED THE RPM'S TO 4000 THEN THE BIKE TOOK OFF ABRUPTLY. ONE THOUSAND FEET LATER, I WAS COMING TO A STOP AT 5 MPH AND THE ENGINE TURNED OFF AGAIN. A HALF MILE LATER I WAS IN FIRST GEAR INTO A CORNER AT 5 MPH THEN THE ENGINE DIED. THERE WAS NO STARTING WITH THE START BUTTON, SO I POPPED THE CLUTCH AND THE ENGINE STARTED AND I ACCELERATED. AS LONG AS I KEPT THE RPM'S HIGH THERE WAS NO STALLING, BUT IF I CAN TO A STOP, THE ENGINE WOULD DIE. I WAS ALMOST REAR ENDED FIVE TIMES TODAY!!!! I ALMOST WRECKED IN THE CURVE WHEN THE ENGINE...