Why did Nathan gail kill dimebag?

He thought Dimebag was the reason Pantera Broke up.

Another View: Several theories, including the above were advanced, including the fact that the shooter believed that the band was stealing his songs, but other documents lean towards the shooters Paranoid Schizophrenia as the cause.

See the below link:

Update: How can he think Dimebag was responsible for Pantera breaking up when he shot Darrell while performing on stage with Pantera who obviously had not broken up, else they wouldn't have been playing at the time he was shot.(yes I have seen the video of Dimebag being shot). Facts please not Fiction.

um he was playing with a band called Damage Plan.