8:30am PT by Lesley Goldberg
'Grey's Anatomy': Watch Alex Rip Arizona's Head Off (Exclusive Video)
Alex and Arizona are working together again — but it's not going as smoothly as it should be.
Arizona, on high after being selected as Dr. Herman's (Geena Davis) fellow, seems to relish holding her new gig above Alex's head.
"My job is going to make your job obsolete," she says after explaining an intricate procedure to Alex, who winds up taking over one of her cases.
But when something goes wrong with their Tiny Human patient, the parents rip into both Arizona and Alex — with the latter, in turn, ripping his former teacher.
"I never should have let you dictate a procedure I don't believe in," Alex screams at Arizona, before telling her to stop overstepping.
Watch the explosive scene, exclusive to The Hollywood Reporter, above. Stay tuned to THR's The Live Feed for more Grey's Anatomy scoop.
Grey's Anatomy airs Thursdays at 8 p.m. on ABC.