I hope than I'm wrong, but I think that you just ruined a really exceptional piece of ocean spray. If there's any moisture left in that stick at all, it's going to split right down the center of your bow.
This was the least exceptional piece of OS I had stashed, but I appreciate the input.
My experience with OS has been that it has ALWAYS split from the bark to the pithy core, if it splits.
Also my experience that if OS is taken down to exposed the pith along the entire length, then I've NEVER had a piece split.
I've had 3+" logs of it, taken green in the early summer, in active growing cycle, that I've taken to the bandsaw within 1-1/2 hours, and so long as I've sawn it to the core, it had dried without splitting or checking.
Also my experience that the core rarely runs down the center. Mostly, I find it meanders around somewhere inside, but does waver from side to side from butt to tip.
Your mileage may differ.