Pure ego. He will do whatever he thinks it takes to regain power, even if his tactics make no sense. He is laser focused on the 50m target while not realizing what he’s doing now will destroy his chances at hitting the 300m target.
His “tactics,” as you call them, make a lot of sense. What should he do, go away and shut up, like George W. Bush? He is telling his supporters he is still there and in fighting form.
Besides, if he is fighting for us, then you can’t say he is fighting for himself. All this “ego ego ego” stuff is the usual cheap shot that nobodies make about somebodies.
If you know your Freud, “ego” is simply the part of the mind that gets things done. It doesn’t mean a medical condition called self-love, as most people think.