This move, combined with the Weber/Subban trade, suggests that Poile and the coaching staff are looking to be much more mobile/quicker on D than in prior years.
I think watching Brent Burns dominate us was a wake-up call. Candidly, I am both surprised and pleased at Poile's willingness to adapt on the fly; he's as old school as you can get in terms of tenure, and yet seems to be capable of plenty of new tricks.