Board Thread:Episode Discussion/@comment-3125844-20150102195114/@comment-5083222-20150123124931

Bud is known in the Beaver community as the "friend of the Grimm". When the supposed Endezeichen Grimm was running around, actually he was a hero worshipping Lebensauger named Ryan, it was Bud who contacted Nick. For all purposes, Bud is the Beaverfolks' liaison to the Grimm of Portland.

It would only make sense that as one of the charges facing Monroe is "befriending a Grimm", Bud would likewise be grabbed. There, Bud's just a victim of the same person who told the Wesenrein about Rosalee and Monroe.

As for who sold MonRosalee out, from the this Promo, Next on Grimm, at the 12 Second mark, you see Rosalee yelling at a woman. She has blonde, shoulder length hair, a pink suit and you can see her face here, NBC Grimm Page, picture #9