That's more than a neck reset. The neck block has shifted on that and the neck and block are being pulled into the sound hole. I'm pretty sure the top has to come off to properly repair this damage. Those are super nice guitars. I like the herringbone rosette! Good luck, Richard!!
If done carefully, this can be done without removing the top. It is not a trivial repair, but it is not something that would absolutely require the top be removed. In fact, it is the "popsicle" brace glue joint and/or the upper transverse brace glue joint that have been compromised (or both are compromised). This is the major reason that the popsicle brace is there, to prevent this problem, but it can't do its job if the glue joint fails. I'm going to assume the popsicle brace has failed.
The first thing to do is to remove the popsicle brace entirely, and loosen the upper transverse brace glue joint in the area of the crack , and then get all of the old glue off (from the lower side of the guitar top) from the areas the popsicle brace was glued. Then, very carefully, a screw jack must be put inside, running from the tail block to the "bad" side of the neck block, to push the side of neck block slowly forward until the sound hole is round again. Add a couple of cleats to secure the sound hole crack. Then add back the popsicle brace, add glue back the upper transverse brace, making sure to add enough glue so that there are no voids. Remember, the popsicle brace has a wide, long glue joint. After all of the cleat and brace glue joints are dry, remove the screw jack. This obviously must be done with the strings off, and also, it is highly advisable to support the "good side" (i.e. the side of the neck block that hasn't moved) so that the pressure from the screw jack is not trying to move the entire neck block, just the side that has moved, as well as the tail block.
It is almost a guarantee that this was due to the guitar being overheated. Could have been in a car, could have been somewhere else, but comprimised glue joints only really have one cause, and that is heat. Because of that, it would be a good idea to inspect EVERY glue joint in the guitar for compromise because if the upper transverse brace glue joint is compromised, so could any other glue joint, and if you are in there fixing that, might as well get everything else fixed. The only other thing I can think of is that there was an impact to the top of the guitar, probably on the fingerboard extension that broke/popped the upper transverse and popsicle braces loose. There is no sign of that kind of impact, but the fingerboard extension is black, so it would be hard to see.
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