IOC President Thomas Bach called it “a lively and spirited debate.” That’s an understatement. With the Winter Olympics set to open in this week, Bach faced a barrage of criticism — and entrenched support — from roughly 100 International Olympic Committee members Tuesday over the decision to exclude many Russian athletes from the Pyeongchang Games. Two members — Richard Pound and Gerardo Werthein — got into a nasty exchange on the floor of the spacious meeting room, rare in the genteel traditions of the Olympic body. Pound is the IOC’s longest-serving member, and he was among more than a dozen to air views in what he called “the matter of Russian doping activities.