That would be a fit symbolism if it happened.
It would need to have been credible to those present, however. The mood of that crowd wouldn’t have been receptive to what they’d see as Melchizadek mumbo jumbo. Jest my own private guess, it was a list of their illicit mistresses and/or some other juicy data that showed HE HAD THE GOODS ON THEM and knew who’d witness to that, too!
My comment was on his authority to act or not act as he did, given that he is literally God. Since the account makes the point that Christ was writing in the dust, you gotta figure Christ was writing out all the faults of all the accusers there as well as the pertinent points of the Law all were in violation there-of.
In the end, there was just God in Flesh and sinner, and God in flesh forgave her when he rightfully could have sent her to hell. That is what Paul was referring to in the book of Hebrews when he described Jesus as being of the priestly order of Melchizidek. So much for mumbo jumbo!