"It's a physical being... He can die. And... well. Only way I know how to end my curse that I haven't tried." It's kind of a nuclear option, and he knows it. But Kabuto's right - this probably isn't the time or the place.

"If my damn portals worked we could... get out of here. Ugh. Good thing I didn't... try to fly while drunk." He absolutely would have crashed, and he knows it. He's unsteady enough on his feet as it is - no need to add another dimension to wobble his way through.