Charlie was never one who covered up misdeeds, and what Jacob had done reflected his corrupted character and clear refusal to feel remorse.
As such, Charlie naturally refused to offer any help, completely giving up and allowing Jacob to keep going off on his own tangent, tearing himself apart in the process.
Still, Raymond did put a good word in for Jacob. "Actually, one can understand Mr. Wilson's motives from a certain point of view. I was the one who set him up so that he broke that vase, a