I hope not, but probably. I was delighted in the "Whitecaps" (episode 13 of season four), and much of season five (latter episodes notwithstanding) with his squeeky cleanness. But Tony himself was snorting thruogh much of season five; perhaps Carmela will calm him down again. Chris, on the other hand, doesn't have a girl now, and may resort back to the only thing which brings him comfort...
Mick