Check out the excellent video tutorials by Dan at
http://www.pgmusic.com/videos.user.htm

Dan shows how he generates lots of extra RealTrack solos in the RealBand Program (which comes with BIAB) so that he can cut them up and piece them together to create his signature lick.

This may be the only way to get the exact blues ending you are looking for until PG brings out a set of RealTrack classic intros, endings and hot licks, something I've added to the Wishlist.

Otherwise as Tommyc suggested, going into the BIAB notation windows and writing your own endings and/or moving things around to get what you want.

Definitely check out RealBand though.
And maybe add your vote for classic hot licks etc in the Wish Lists.
The more squeaky wheels the better.

Best of luck,
Carkins