He was infusing Propafol - an aneasthetic drug used in operating theatres, and never in a home situation. He bought literally gallons of the stuff.His only defence was that he wasnt in the room and that Jacko must have woken up and given himself a large shot of the stuff through the IV in his leg.

Even if that is true,he shouldnt have left the patient unattended, and should as a matter of course had him wired up to heart monitors etc as he would have been had he been in hospital and treated with the same drug.
He also delayed calling the emergency services for almost half an hour after Jacko stopped breathing,as he wanted to try to sort it out himself wiothout any repurcussions.He then cleared the evidence of the medication from the room and didnt inform the ambulance crew or doctors of what he had been injecting him with.
Guilty as sin. A complete dereliction of duty. If his first priority wasnt to cover his own arse, the medics could almost certainly have revived Jacko.