What ARE the chances they use Bobby or a close relative to him?

The chances they use Bobby are a definite 0, because Bobby's been dead for three years 😂

Close relatives are also unlikely - he only sired one litter (Poppy's) and though one of the females from that litter has been bred, hip scores hover in the mildly dysplastic range. That won't be an immediate elimination in Farmdog Land, but it's not what you pick to improve your breed either. Bobby's sire was only used once. He did have a litter sister whose grandbabies are still appearing so there's a vague chance there, but overall Bobs was a little dog from little lines.

His dam died tragically after her 2nd litter, and that's the real reason why *I* don't think Bobby, Poppy, or close relatives should've been used for a Cavalier outcross. I never knew Shanty, but I can tell you that the temperament that causes a dog to play so hard it falls and breaks its neck, that lives on and breeds true.