A careful word study of the tomb scenes related in the Gospels shows that Jesus left that burial cloth AND the rock tomb without taking the cloth off or rolling away the stone. The Physics behind doing such a thing has to have extraordinary energy utilization, so the trace remains of such an energy surge could well have been source for the image on the shroud. That men with today’s advanced technology still are unable to explain precisely how the image was deposited in the cloth speaks to the extraordinary energy utilization even the more! Jesus left our where/when and ‘stepped’ into a different where/when no further away from you and me than the length of a man’s arm, yet we are totally un-sensing of that other where/when.
I could go along with that picture of an energy flash, with the caveat that without more sure information, I would not want to trap our Lord’s works in the framework of “pure physics” especially when we know Him for miracles like stopping and restarting the rotation of the earth (i.e. making the sun stand still). I have the same gentle chiding for the “creation science” folks, even the old-earth ones who are not as great offenders in that regard. If there was a flash it was a joyful manifestation of power.