This situation, where a lawyer uses the financial threat of having to deal with the legal process (little to no cost for the lawyer, great cost and risk for the defendant) to win a highly questionable lawsuit for his (the lawyer's) personal gain is highly disturbing - speaking as a non-lawyer.
It's bullying, plain and simple. Carreon is another example, and I'm sure there are thousands of such threats made a month that we don't hear about.
I think that this is a complete abuse of the power that is given to the attorney and should result in disbarment.