Dr Cockroach becoming human?

From the episode of Monsters vs Aliens called 98 Pound Cockroach, we find out that Dr. Cockroach can use a machine to control how much of him is man and how much is Cockroach. As such this gives us the possibility that in a later episode, he may either be forced or choose to give up his cockroach form and return to a human state, at least for an episode. Comments?