John Barnett, the former quality control manager for Boeing until 2017, was in the “midst of” the whistleblowing case when he allegedly took his own life — but his attorneys are demanding answers from police, seemingly calling his sudden passing suspicious, considering the timing and Barnett’s positive outlook on the future, RadarOnline.comhas learned. The former Boeing employee was allegedly in good spirits and looking forward to putting the retaliation lawsuit against Boeing behind him. Barnett’s legal team, Robert Turkewitz and Brian Knowles, who were repping him in the legal battle, said t…