The scurs usually start to grow after the scab has dropped off, and that takes several weeks, at least mine do. Sometimes the scurs grow quite big, and will curl, other times they are just little nubs of horn. They are not as strong, and often with head butting they get knocked off, causing bleeding but never anything to really worry about. The bloody head just looks bad. I've saved the largest spiral from my buck and it's hanging on the wall of the barn. It's if they start to curl into the head or eye that you might consider snipping the tip off. I don't do the dis budding myself, so don't bother taking them back to be done again. The worst job I've ever seen was done by a vet, under anesthetic.