Im not totally sure from the pictures but I don't really see anything that looks like a chrysal. The first picture after the full draw to me just looks like the grain lifting, which can be avoided if you wet the bow between sanding passes. Hickory especially seems to like doing that, and I think its not really related to the tiller. Seems to happen a lot with the porous early wood fibers.
The diagonal crack really looks like a chrysal, and it being that diagonal really suggests it is...but to me it has the jagged look of a tension break that happens when you heat treat and bend over a caul, not the crinkly look of a compression failure. Could be wrong, just offering another possibility.
And i do see the splinters too, but none of this would really worry me in terms of safety. Could the tiller be better...sure, but i bet you'd have to pull this bow really really far before it broke.