First, WGBH, let me say that I for one have no intention of stringing you "up on the gallows". In my own mind and heart, I allow the possibility of the existence of BF, an outside chance that somehow, against all expectations and evidence to the contrary, a giant bipedal primate is roaming the woods of NA undetected by modern scientific equipment. It's unlikely, IMO, given what I've discovered in this forum and elsewhere in the last few months, but I have to confess it is at least possible. So, I have no wish to ridicule you, insult or deride you in any way.
That said, I do wonder if you've considered all the alternatives to your belief/opinion/conclusion that you witnessed such a creature. In the other thread, I asked you if it was possible that you:
1. Misidentified a bear or other animal;
2. Were the victim of a man-in-a-suit hoax at your expense;
3. Or if you might have hallucinated or waking-dreamed the animal (which again is a known human phenomenon and does not open you up to ridicule or accusations of insanity).
You've already said that 1.) is out of the question, and you seem unwilling to entertain 3.), so allow me to ask you once more: Could you have been the victim of a hoax?