My comment below about the Diocese of San Jose wasn't intended to come down on any single side of the debate (what there is of it) on which environment is "best" for celebrating this sacrament. I'm not a particular devotee of the box nor an enemy of "face-to-face" celebration of the sacrament. 'Sup to you, penitent.
But what I do believe is this: this mandate by the bishop has nothing to do with protecting the penitent, and everything to do with (as it states in the article) protecting priests and diocesan pockets. In fact, I wouldn't be surprised if this window-cutting spree was required by an insurance company or, at the very least, recommended by lawyers.