If you google "G8 b-pillar removal" there is a thread on the other board detailing how to remove this piece. From what I read, there are a few screws holding it in place.
2009.5 SBM GT: Lots of show with some go.
The garage queen.
2008 IOM GT: Some go, working on the show.
The daily driver.
2004 Blazer Xtreme: Lots of go.
Sold and will be missed.