I seriously doubt that Suarez bit deliberately in order to engineer a move, no matter how much circumstantial evidence accumulates.
For a start, I don't think he's bright enough to think that many moves ahead, and anyway, he'd have had no way of knowing in advance that it would turn out this way.
Also, I don't think he'd have purposefully jeopardised his WC in that way.
No, he just can't help himself, that's all. Many people have such a strong desire to win that they'll do almost anything to achieve it. It's just that few over the age of three choose biting others as their modus operandi.