Some employees have no scruples....(rule number 1!)
When a man attempts to damage your livelihood...take no prisoners.
There's that "predatory gringo businessman" line again....shove it....his business is in America...where business is predatory by nature. PS when they left their job and took their employers leads..... they chose their fate....the employer didn't "destroy" their lives...Their lack of integrity cost them a "mentor".