Water sitting in the template hole is not nearly enough. Drilling with hobby grade tools essentially requires the steady flow from a hose. The correct amount of water while drilling would have completely saturated that 2x6 for a day or two
Personally I think it was more me drilling close to the top, and a little too much pressure and no wood on the other side clamped, but ehh why sit around and diagnose why... I asked @Joe Glass Cages glasscages if he could just hook me up with a piece its small to ship to ohio