Madison Square Garden head honcho James Dolan was so offended with a security guard who didn't recognize him outside the exclusive Delta 360 Club inside the arena that he fired her right on the spot, sources told The New York Post The hotheaded owner of the Knicks cooled his heels overnight— and he rehired the underling the very next day, said the sources. Dolan, 57, was walking into the private club —open only to season-ticket holders an VIP guests — during Sunday’s Knick game against the Boston Celtics when security guard Fiordaliza Hernandez asked him for his ID — which he never wears, sources said. Instead of laughing it off, Dolan snapped, “Do you know who I am?” The startled security guard admitted she didn’t. Then Dolan demanded, “How long have you worked here?” Three years, the guard said. “I’m your boss! I pay your salary!” Dolan shot back. Apparently the rules apply for everybody but the rock-star wannabe Cablevision boss but the steadfast Hernandez stood her ground and wouldn't let the ID-less Dolan in, said the sources. Dolan became so irate he morphed into Donald Trump and yelled, "Give me your ID! You're fired!" The shaken guard was sent home immediately while Dolan ranted, "I have to get new security in this building! I have idiots working here!" said the witnesses. After Dolan reconsidered the firing, Hernandez was back on the job at a different post at the Rangers- Winnipeg Jets game. It's funny because Dolan's blow-up comes on the heels of three season ticket holders waltzing by security into the Knicks locker room without any repercussions, according to The Post. Hernandez was unavailable for comment while MSG spokesperson Kim Kerns said, "As a company policy, we do not comment on employee matters." But a source told The Post, "Nobody was fired." Too bad Hernandez wasn't around when Isaiah Thomas was sniffing around the Garden a few years ago. And where are those eavesdropping devices when you really need them?