LITS - don't get wound up by fisherman. It seems to me you were at worst naive and gullible in your depth of belief that Bethel was the centre of true worship and that you simply believed you must be wrong. I know several in the London Bethel or who have been there and the negative stories that come out are enough to make me not recommend Bethel life to anyone who feels he or she must not go against their conscience to please men.
It is grimly satisfying that you are free and that the overseer who caused you so much grief is trapped. Unless he is dead or awake.
Fisherman is wilful in his behaviour - he defends the WT on a forum that they would describe as "apostate." He is going against what they say every time he puts his defence of them in a post on here.
He thinks enough of himself that the WT rules and guidelines don't apply to him. That should tell you the kind of person he/she is.