Its "Im is normally right", oh sayer of soothe.
Since you seem not to be of US birth, we have a "Presumption of innocense" that is inconveniently shot through this whole issue. The sheriff himself is already gonna give the defense a righteous case when they question him as to "when were you lying?, when you said they had nothing to do with it, or now?" The sheriff will hang himself and the case will float away or will result in a much reduced sentence. Remember that the CHARGES need to be proven to what level?
The entire issue of whether the balloon couldnt lift the kid is entirely not out . The balloons volume was correctly estimated at 2300 cu ft (not 1200 as you "calculated".The guy I listened to from WHL stated 2400 but several balloon expwerts knocked that back ) Please dont wear any holes in your back from doing any more selfcongratulations.
If the father pleads and goes for something like "treatment" and his kids and wife are evaluated for their own complicity, they could still get a great book deal.
The kid is what blew the whole thing. If the father is the instagator , and "sentencing before judgement" requires that both sides agree, then itll be a different story.
I think youve got a lot to learn about US system of justice. Remember OJ got off too and it was only by someones slip and some dumb forensics. I see no compelling smoking gun here.