Yes, Obama is pushing Carter aside as the worst president in living memory, but he's not insane and such a crass move would be beyond the pale and everyone knows it. The constitutional process for filling a SCOTUS vacancy will be followed here.
Thanks for the clinical diagnosis.
If this article is correct, it creates a scenario that actually is constitutional. I guess, unlike you, I have paid attention to Obama’s actions and believe he is capable of absolutely anything. I am pretty sure any mental health professional would conclude I am not paranoid.