Hey Mypoorbutt,
I never had painful spasms before, but my CRS said my sphincter was in spasm, because it was so tight. But no, no pain associated with that spasm, and luckily also no such pain after. I did have the burning before, not every time, but 50% of the times. It was inside and could last for hours. I haven't had that since the surgery. As far as pain is concerned surgery was a full success. No more pain at all. But today is only day 3, I am keeping my fingers crossed things will remain this way as my healing continues.
My worry at this time are the humungeously swollen hemorrhoids and skin tag opposite the surgery site. They are not painful, but feel like a lot of pressure, so I can't sit on my butt, and when I press them, e.g. with ice, then it triggers the bowels to move. Hoping that swelling will go away soon.