nods said..
It was murder...but not cold blooded, cold blooded is pre-planned and without remorse.
Clearly it was a heated argument (maybe about a rugby player? does not really matter)....he got abusive...she retreated to bathroom with phone and locked the door.
He wanted her out....she did not want to come out.....he had a gun..... in a rage he used it.
He should have the book thrown at him....he has used every bit of money/ sympathy / fame to weasel his way out....except man up admit what he did and accept his fate.
How is it not cold blooded? the dude has No Friken Legs!!!!! and manages to Blow her to a pink mist through the bathroom door! HE HAS NO LEGS!!!! the man made a hell of an effort!!

lets say it once more HE HAS NO LEGS!