I wish Apple had a 'flag application' button in the App Store to flag things that seem amiss and report them. If so, I'd have flagged this for being GPL software on the app store.
Perhaps, but it seems to be a pretty legit reason to pull something.
edit: instead of downvotes, i'd love a response to understand why someone should be allowed to put a GPL application on the app store and not distribute their code (and that you can't copy the application and send it to others, etc). Seems to be a pretty clear GPL violation.