I seem to remember this variant not having any audio for some reason which made it more shocking to see. That would place it to an early S1 episode where the logo has no audio.
Has anyone considered whether this could have been an early version of the logo that was used in the original broadcasts of a few season 1 episodes? That would explain it being pasted over on the versions released online.
“The Broadcaster” would mean Treehouse and I doubt they would do something custom like that unless it was some sort of screen bug/watermark, as they only showed the already completed Radical Sheep’s shows. It’s possible though that the variant was only shown on Treehouse as that’s where I recall seeing the variant.