If you torch both ends of the log (apply heat to ends) water will not significantly boil out the sides of the split.
A theory, and speculation, not a fact.
Just guessing. Based on what I know about plants.
Incidentally, I believe you might be on to something here. A few years ago I had several large, white pine rounds that I attempted to burn up in a bon fire. This was in my pre-wood burning days and the result of burning these overly large rounds were several rounds that I left as is for several years until I started burning wood and bought a splitter.
When I split this wood, stacked it and then started burning it in my fire pit and camp fire the pine burned like nothing I had ever seen before . . . it burned long, intense and with a very black smoke. In fact, I had a friend calling it my "diesel wood." I kinda wonder if I ended up sealing in the resins and moisture and if the result was a very slow seasoning of the wood which allowed the resins to stay vs. evaporate. Again, just a theory or guess on my part.