Other than when someone who had repeatedly wronged others and had finally gotten their comeuppance, I never saw anyone actually be glad when others got disfellowshipped.
What I did see were certain ones who had very little authority or power in their own lives and consequently reveled in the extra virtuousness and the small bit of (Watchtower sanctioned) power they were able to experience when they shunned someone once they had already been disfellowshipped. I remember those who would go out of their way to be seen by a disfellowshipped person just so they could walk by and ignore them or those who 'd make a big show of scurrying away horrified, snatching their children up out of harms way when a disfellowship person came into their presence.