Well, my big complaint about Yoda and the rest of the Council is that they simply had expectations that Anakin would always be at that point where his life and emotions are in check. Obviously we all try to keep balance in our lives, but we have points where we simply cannot attain that balance. It seems to me that Anakin was at a low point, and that Yoda and the rest should have provided additional support for him to help him get back on his feet. Think how differently ROTS would have ended up if Yoda had taken the time to truly provide understanding counsel to Anakin. Anakin might have relied more on his support than Palpatine's, and in the end may have made the right choice.