I was part of a 25 man raiding team. I was one of two resto shamans. I was also the lowest performing healer in each fight (not by a lot, but I was almost always the bottom rank). I was kicked out of the guild and replaced by a resto druid (only raiders can be in the guild). We had no other resto druid, and he does perform better than anyone else in the guild. Was this justified? Is it really worth sacrificing a member of 9 months to get someone a bit better?