Transformers 2: Michael Bay Confirms He's A Liar, Then... Lies Again?

Remember when Michael Bay said that Megatron is "not in [Transformers 2]"? Last week Transformers: Revenge of the Fallen screenwriter Roberto Orci confirmed Megatron's appearance and we called Mr. Bay a Liar. Bay has finally responded and admits that the "cat is out of the bag" and that "Megatron is back".

But then Mr. Bay goes on to explain that "you will only get to see him from the long lost past." That's funny, because when the film was in production, /Film spies reportedly spotted the visual effects team using a miniature model of Megatron while shooting some key sequences. Could Michael Bay really be lying to fans again? Bay explains:

"We go way back in time as this movie explains the mythology of the Primes. He is not a tank like everyone suggests, but an alien vehicle. But sadly he does not has much screen time."

Yeah... flashback... not much screen time... yeah. Potential spoilers after the jump.

Exhibit #1: he packaging for Megatron's Leader Class action figure contains the following description:

Rebuilt with parts cannibalized from other Decepticons, Megatron rises once again to lead his army. Though the AllSpark destroyed him once, he can now feel its power coursing through his circuitry. It calls him to seize his rightful place as ruler over the puny planet on which he was imprisoned and destroyed, and from which he will launch his conquest of the universe. Optimus Prime is all that stands between him and victory, and the Autobot leader has done a poor job of hiding himself. At long last, Megatron knows exactly where his enemy is, and he has power enough to destroy him.

I understand that Bay is trying to protect his movie, but why must he continue to lie? Why not just come out and say, "Yes, Megatron is back. the movie is going to be AWESOME." Instead, he claims that Megatron only appears in a flash back sequence, and puts us in the position to offer up evidence to the contrary.