Ballard is very capable of eating big minutes, it's just he is considered fifth on the depth chart and not everyone can get the 20+ minutes a night.
I really don't like any bleacher report advanced stats of any kind because they give absolutely NO valid insight into a hockey player's value. Those "chances against" that I witnessed were of no fault of Ballard's, so why do you count them against him?
Also he has not played "sheltered minutes" (I also don't like that term at all). There is no such thing as sheltered minutes, especially during the playoffs. What I look for is how well he plays his position, and compared to every other Canuck dman, he was the most effective.
You can get 20+ mins a night if you can be defensivly responsible on an AV team. It's why we've seen Tanev rocket up the depth chart. Ballard has issues defensivly, it continues in this series.
You might not like advanced stats, but coaches use them to dress their roster. Chances against might not always be the fault of Ballard, but it's no coincidence he's been on the wrong end of them this series, and the other defenseman haven't (at even strength).
By sheltered minutes, I mean he's not facing top opponents on every shift. He's not gonna see Kopitar or Richards very often, Bieksa and Hamhuis are. Of the 6 defenseman dressed last 2 games, Ballard gets 'sheltered' more than any of them (including Tanev). Perhaps he's being 'sheltered' cause he hasn't played much in months, but I see it as a continuation from how he' been used for last 2 yrs here - in a sheltered role. Just my thoughts.