Would you get rid of him?

i think i would seek help and professional dog training to try and sort things out i would be extremely hesitant about getting rid after all its how we train them in the early days that reflects their behaviour later on

I will chain such pet down or cage him as long as i won't be with him or monitor him.

In my case, I don't... I had a dog that usually destroys our plants and bite off our sandals and shoes. So all I did was tie him up in a secure place. I didn't get rid of him, even if I did tie him up, it was for his own good. We never stopped taking care of the dog even if he got tied up. Hehe. It's against my nature to drive away a pet, I value them.