If God is perfect perfection, the only journey which would provide value, is to again arrive at the state it is already at.

Therefore it makes sense that it would pull itself apart to re-achieve its own perfection.

The act of tearing apart is the single play available from the predicate of perfect perfection.

It is therefore compelled into separation by the very essence of its perfection, which itself is the catalyst to action towards a "more perfect perfection" which can only be realized by first becoming "less perfected".

Only in the case where one assumes that from the point of perfect perfection there is no action desired/demanded because of the initial state is this action path illogical.

But perfect plus one would be a new standard of perfection, and the only way to come to realize if there was a more perfect perfection would be to attempt to increase the level of perfection by some action, and therefore action towards a potential "more perfect perfection" (perfection being only the ongoing embodiment of successive and ultimate levels of potential) seems demanded by the very nature of perfection itself (assuming that to be perfect is in fact a desirable thing).