Huge video podcast in Vergecast feed again (Verge Live at WWDC)

Every few months a random video podcast seems to make its way in the Vergecast RSS feed, which from my understanding is supposed to be an audio-only feed. Since I have Pocketcasts on my Nexus 4 auto download my favorite podcasts, this can present a storage issue as the video podcasts are several hundred megabytes. Are videos getting posted by accident instead of mp3's, or is this on purpose?

Update: For some additional info, the video podcast total size was 941MB...a little big ;)