I found him too, and as a matter of fact, I had quite a laugh
We just escaped from that evil man's prison when I found him and he asked for directions. Boo knew all about the city (but I doubt Radeel knew what a Boo was
)
I don't know if he'll return in ToB, but I don't see any reason why he should.
BTW, from Europe
------------------
The last arrow of Legolas kindled in the air as it flew,
and plunged burning into the heart of a great wolf-chieftain.
All the others fled. -J.R.R. Tolkien, The Lord of the Rings