In an odd turn of events, Facebook said later on Thursday that Krieglstein had actually created all of these Pages himself, over the past year-and-a-half, and that the social network had accidentally restored admin privileges to him, the Pages' creator. "We investigated this report and found it to be an isolated incident," the company said in a statement. "The error has been fixed, and we have received no other reports about this issue."

But Krieglstein disputed Facebook's explanation, saying he "definitely did not create" any of the Pages belonging to other companies.

Krieglstein lost administrative control of the other Pages around 2 p.m. Pacific time Thursday, shortly after the blog Allfacebook.com about the glitch.

He also lost control of his own Pages. "Now I’m not even admin on my own company," he said.

He doesn't know what caused the problem but believes that he may have had administrative control of the Pages ever since Facebook began rolling out the redesign a few weeks ago. "I think it's just Facebook pushing out too quickly," he said. "I really think it was just a kink in the new code."