Notice: "Withdrawer" in the first instance and "withdraw" in the second instance, one instance of rhotic intrusion sufficient to maintain the flimsy curtain held up between straightforward unjacked speech. And he knows it.
Notice the same thing with, say, Paula Dean pouring on the Southern charm by purposefully mispronouncing "spatuler" in the first instance then correcting on the second instance "spatula" proving to listeners she does know how to pronounce the word without intrusive r and prefers it for clear speech and is just putting us on for fun in all other instances.
