There was no sign of Megan Fox when “Transformers” director Michael Bay hosted a reunion of the movie’s crew and actors at M2 the other night. Tyrese Gibson held court at the center of the action and needed two security guards to keep all the women at a safe distance. A spy reports, “He caused such a commotion that two guards were called in to keep the girls away from him.” Fox caused a stir earlier this year by comparing Bay to Adolf Hitler, prompting crew members to post a letter on Bay’s Web site describing Fox as “the queen of talking trailer-trash and posing like a porn star.”