I'm gonna go with Loeb's hubris...especially after the assertion in this last episode that ANYONE would be worried about a comic shop running out of Loeb's Hulk, as if masses of geeks are dying to get their hands on that "masterpiece" or something.
The episode was more or less done before Loeb got canned, I believe (I'm pretty sure the rest of this volume isn't affected by his absence in any way, since they get done so far in advance of airing).
Ooh, don't get me started: I didn't pay money for Ultimatum, but Ultimate Nightcrawler was killed off! Meanwhile, Angel is flying underwater, while the guy who could teleport away died. Thanks for wrecking the Ultimate universe, Loeb!
The official explanation (http://www.comicbookresources.com/?page=article&id=18931) from the show is that since comics are created months ahead of their release date, and Isaac died, at the most, 6 months ago in the shows time, these are still issues he did before he died.
And apparently, it gets addressed next episode, but in true fashion, it'll probably be muddled and just suggest more questions.
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The episode was more or less done before Loeb got canned, I believe (I'm pretty sure the rest of this volume isn't affected by his absence in any way, since they get done so far in advance of airing).
Or maybe you were just being rhetorical...
Same Tim Sale art, but Isaac's been dead for a couple seasons and we saw the last issue ship out of his workshop.
And apparently, it gets addressed next episode, but in true fashion, it'll probably be muddled and just suggest more questions.