No waterboard, they roughed them up pretty good the way it looks in the court appearance videos. They wanted the world to see it too, no attempts to hide what they did to them.
Standard op for the Russkies. If you so much as get a traffic ticket you just might get cuff around the ear and anything more serious and Russian cops really slap you around. Sometimes they really kick your butt.
And the Russian people are perfectly ok with this.
In fact they insist on it.