B737 PAX NOT FOLLOWING INSTRUCTIONS TO BE SEATED DURING TAXI OUT RESULTS IN THE ACFT RETURNING TO GATE AND DEPLANING THE PAX.

Narrative

MY CONTACT/COM WITH THIS DISRUPTIVE PAX STARTED AFTER THE SAFETY VIDEO WAS COMPLETED AND I WENT IN THE CABIN TO PERFORM SAFETY COMPLIANCE CHKS; AND PAX THAT WAS MOVED FROM FIRST CLASS BACK TO ASSIGNED SEAT IN COACH WAS NOW BACK IN FIRST CLASS. PAX WAS UP AND OUT OF SEAT FOR THE THIRD TIME DURING ACTIVE TAXI. I TOLD PAX TO GO BACK TO HIS ASSIGNED SEAT IN COACH. HE SAID NO; SOMEONE WAS IN HIS SEAT. I TOLD HIM I WOULD GO BACK WITH HIM AND HE SAID HE WANTED TO STAY IN FIRST CLASS AND LOOK OUT WINDOW. I WALKED BACK TO COACH WITH PAX (AS FLT ATTENDANT #1 CALLED COCKPIT). PAX WAS ASSIGNED SEAT AND WAS NOW OCCUPIED; SO I ASKED PAX TO PLEASE SIT IN ANOTHER SEAT (ALSO WINDOW) BECAUSE IT WAS VACANT. PAX SAID 'GET HIM OUT/THROW HIM OUT OF MY SEAT' AND WAS GETTING AGITATED AND VERY DISTURBED. PAX WAS NOT FOLLOWING ANY OF OUR CREW INSTRUCTIONS. FINALLY; PAX SAT IN SEAT. RETURNING TO FIRST CLASS; FLT ATTENDANT #1 INFORMED ME WE WERE RETURNING TO GATE. WE WERE MET BY MGMNT AND POLICE; AND REMOVED PAX FROM ACFT. POLICE WANTED A WRITTEN STATEMENT IMMEDIATELY! THIS PAX WAS DISTURBED; DISRUPTIVE; NOT FOLLOWING CREW INSTRUCTIONS; NOT COMPLYING WITH SAFETY MEASURES AND WAS TOLD 3 TIMES TO RETURN TO HIS COACH SEAT AND KEPT TRYING TO GET UP TO FIRST CLASS. [OTHER] PAX MADE COMMENTS REGARDING THIS PAX'S BEHAVIOR AT ARPT (TERMINAL) -- 'STRANGE; AGGRESSIVE AND DISRUPTIVE.' MANY PAX IN FIRST CLASS AND COACH SAID 'THANK YOU' FOR REMOVING THIS PAX. SUPPLEMENTAL INFO FROM ACN 538928: I STOOD IN THE AFT GALLEY WITH AN ICE MALLOT IN HAND IN THE EVENT I NEEDED TO USE IT.