For spur removal here is an easy trick you can look up, microwave a potato in a microwave until hot and done, put potato on spur 3 min until soft, do NOT touch skin! Channel lock pliers on spur and twist, it should pop off. Feed potato to roo.
My roo, which i raised from a chick, is a big fine black astrolorp. After about 6 months of so it is natural that they start getting aggressive. My chickens are free ranging and also have a 30yd pen that they sometimes stay in.
Now, you do have to learn yourself not to be so afraid of your...