You sound pretty unique to me.
I've never heard of anyone doing this but would suspect that if you're more comfortable in this position, go for it. Your positioning of your feet like that just may be "freaking" him out. He can't do it so he figures something must be wrong with you.
Maybe not. Ask your neuro next time you see him. I think he'll give you the same response.
I wish I was flexible enough to even attempt it much less being comfortable doing it.