Do not play him against the Penguins. they will target his head constantly like they did in the playoffs to him.
The problem with Bourdon is that he is a smaller guy playing bigger than his size who is not afraid of physical contact.
It's easier to avoid elbows when you are taller than 6' 0"...
The Phantom's have lost some defensemen recently to injury so chances are good he can stay in the lineup even though he is not expected to be in game shape right now. Sheltered minutes on the third pairing are exactly what he needs right now to get back on track.
And yes, as far as I know he had been put on waivers and cleared when the season started.