People should stop giving money to the Parish and Diocese as long as Aaron Bianco remains employed by the Diocese.
The above is what I would do.
Absolutely. You are 100% correct to withhold money from this villainy. A complete boycott would be in order. There are plenty of worthy Catholic causes we can support with our alms. If you want, I can get you a list!
Keep praying. By our Baptism and our Confirmation, we are charged with the obligation and honor of defending the Church by fighting those who befoul Her.