Did "Glee" rip off Jonathan Coulton's cover of "Baby Got Back"?

Musician Jonathan Coulton is claiming that Fox's hit show "Glee" plagiarized a cover he performed of the 1992  Sir-Mix-a-Lot single "Baby Got Back." Via Twitter, Coulton wrote:

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The "Glee" track, from Season 4, below:

Indeed, the song bears an uncanny resemblance to Coulton's 2005 release, posted on YouTube via user Enzemo:

Salon has reached out to Fox via email and is waiting to hear back.