You said you would have "turned him over many times" and he responds by saying "who would they believe yourself or somebody that has been in good standing for 28 years"?............... Personally I would take the risk!
He sounds like an arrogant man who thinks that he somehow has divine protection which allows him to speak to you in such derogatory terms. Whether he is a JW or not, nobody has the right to speak to you like that!
If they can go around banging on doors at inconvenient times, shoving their message of doom and gloom at us, then they certainly don't have the right to undermine our beliefs when they are founded upon fact!
Your situation sounds difficult and must be really hard to bear. I wish you well and sincerely hope things change.
baysixforme.