I haven't read every single post 'cause it would take me all day!
However, from reading one of the first posts it seems that there was a change of controller after the student was "sent solo", and the second controller was not informed of the situation.
Surely it is this alone that started a tragic chain of events?
I can't believe for one minute that anyone would seek to deliberately complicate a first solo in this way, and am sure that if the second controller had been made aware of the student's status, he would never have done so.
A first solo is ALWAYS going to involve a high workload for the student. It doesn't matter whether he's done 10 hrs or 100 hrs.
Forgive me if this has already been said somewhere in the middle!