3.1.2 PTR Disc Priest Nerfs

I don't remember seeing a blue post on these. I was just curious about the rationale behind (1) the Soul Warding change (30%->15%), (2) the Glyph of Penance change (-2 second CD->+5% crit), and (3) the Glyph of Mass Dispel change (50%->35%).

I don't mean to complain about the changes, I just wanted to know the reasoning behind them. Were PvE Disc priests seen as too powerful? Were PvP?


Edit: Please try to keep this thread constructive. I think most people skip rants anyway. Thanks for those who've posted thoughtful replies so far!