He's not a beast... he doesn't have to be one. Whilst he shudn't be ignoring his instincts, he does not have to bow down to them. He has the gift of intelligence and discretion at his disposal. To differentiate between right and wrong, gud and bad, is what separates him from the animals.
You may not be able to control what ur instincts tel u to do, but u can very well stop from retracing ur steps back into becoming beasts, by using ur power of discretion to act against them!