NEW YORK — Two Museum of Modern Art employees were stabbed behind a desk at the Midtown museum. Angry that his membership had been canceled, a museum patron stabbed two museum employees Saturday, police said. The workers, two women who were behind the counter at the museum’s movie theater entrance, were stabbed in the back and the collarbone behind the neck and taken to Bellevue hospital where they are expected to fully recover, New York Police Department spokesman John Miller said. The attacker, a white man in his 60s, had his membership revoked on Friday because of two previous disruptions a…