The airplane was a little off track to the left, this is probably the track correction for weather that the media bet on.
If the normal track runs through TATAB then they'd have flown right through the peak updraft region of the storm (tops at FL530). Based on the quick sight in the video their track would've taken them downwind of the convective core (still with tops around FL440). In that area they'd have hit some heavy down-drafts as well as probably hail and maybe crystal icing. Not where I'd like to be flying.
That said, within a few minutes of leaving Ouagadougou their radar probably would've been filled with red anyway - so not much help there.
- edit -
Also, the final position shown on the radar in the video matches very closely with the presumed crash site on avherald's satellite pic.