FOR BELEAGUERED Knicks coach Isiah Thomas, the insults just keep coming. Madison Square Garden fans chant for his dismissal, vendors hawk T-shirts demanding his head—and last week the prospect of playing for him put a grown man in a state of emotional distress. Last Thursday in Los Angeles, Phoenix guard Leandro Barbosa received a call in his hotel room telling him to meet G.M. Steve Kerr in the lobby because he had been traded to the Knicks. Near tears, Barbosa rushed downstairs, frantically in search of any front office types. "My heart was hurting," Barbosa said. "This is my team. I went a little crazy." Finally, he came across assistant coach Dan D'Antoni, who assured Barbosa that the call must have been a prank. D'Antoni also imparted one last piece of wisdom: "You've got to use someone else's name when you check into a hotel. If someone told me to come down to the front desk and pick up a million dollars, do you think I'd start running for the elevator?"