I mean, if all he did was quickly change one usb to another, then even cctvs wouldn't show much. I'm guessing he got the truth out after finding out (getting that report officially ) and dealt with the cheating colleague since he was asking mc to return. i kno we didn't get exactly what happened but i don't think it was that bad for mc since from the begining he quit instead of getting fired so his overall reputation is good, it's just that project that he lost but it was mc who chose not to fight the case since it was bringing out the worst in him (his violent side). and idk i liked that he didn't get the project back because then it really would've felt like "perks of dating the big boss" - he solves everything for you
Tbh I wished director sa would get cctv record and show it to everyone or something because the mc is being shamed publicly and everything in the presentation is his hardwork. But nothing is done about that(?)