There is nothing wrong with being guy A. I am perfectly happy if most people who free themselves from the Watchtower end up being guy A, in fact.
Don't be Guy B of the first parable... that's wrong. Holding on to grudges and stuff for many years can hurt you.
But you can be Guy B from the second one without being Guy B from the first one... Be an activist but have your own life.
Now, let's all get together and have a beer and some barbecue ;)