LOL Garrison had his man... Bieksa didn't. There's really no good choice he can make there since Hossa can just as easily leave the puck for the other guy.
I said this on the Rags/Canucks defense debate. Bieksa has an uncanny ability to make someone else look horrible for his mistakes until you see replays. General rule of thumb. Blame Bieksa if he's on the ice. Odds are... it's his fault.