Seeing the mold lines I can tell the bottle base was twisted by the center. That means to me it's a pontil...
That seems to be the rare fenomena you explained.I'm afraid you are mistaken. Pontil rods are rotated simultaneously or in unison with the bottle attached to them while the blowpipe is detached and the mouth is finished. They are not twisted on to, while attached, or off of the bottle. Watch a glass blower and his or her assistant from start to finish on a vessel and you'll see what I mean by my statements in my earlier post. I've looked at literally thousands of pontil marks in over 45 years of collecting and not once have I seen this characteristic associated with the pontil itself. With all that said, like you, I would like to see more and better photographs of this piece.
I agree 100% with you.I keep looking at those too. The upper one looks like a fold or wrinkle left from the original parison, while the one(s) at the bottom almost look like surface cracks or cooling lines. Really hard to say. One of those pieces better inspected in hand.