No it does not crit from hide.
It's an alright power, it should crit from hide, but thats just me. With Surveillance, VG, and Shatter Armour, add in Placate and a crit Shatter, its worth the long animations and set up time for a massive wallop. For bosses anyway.
I did see a widow with it the other day.
I died a little inside.
Does it crit from hide?