The basic idea of the theory is that thousands of years ago Green Ranger Repulsa went bad and vaporized their leader, Zordon, into his current disembodied-face form.
It would also explain Cranston’s enthusiasm for the project – this is the sort of meat an actor can have fun with.
Of course, it’s possible that Cranston was just being cute with his message – especially as the Blue Ranger, Billy Cranston, is named after him – although that the original post has been deleted would suggest otherwise.
Even if this theory is proven true, there’s sure to be a lot of surprises in Dean Israelite’s reboot, which is still a rather mysterious prospect despite being only a couple of months away from release.