Thanks. Forgive my ignorance but I guess PVA glue is not the same as superglue?
I have a theory about delamination. It's repaired by inserting glue, usually with a syringe, into the space where the wood has lifted. Presumably if this happens all over the bat or even just the middle, surely a layer of glue will form between the top surface of wood and the main body of the bat, producing an illegal 'laminate' bat, would it not?