"Pilots turns the wrong way, ignored ATC instructions"
Well, did they? Depending on the severity and location of a lightning strike it may disable some systems, usually temporarily, in my experience. In this case, if they were struck by lightening, they may have lost radio and not heard the instruction and radar and not seen the core of the CB, as it was an NG it may have taken out their flight instruments too.
All speculation but we mustn't be too quick to blame the crew. As the crash was at least five minutes after the take-off none of the flashes etc. at the airport are likely to be relevant.