The MC has the video in his phone, and it is also present in the DIK's computer.So I recently made separate saves for each LI and one separately for all the side chicks. I pursued the Jade path and didn't know that Principal Burke would see the clip at the end of episode 6. Who do you think would've leaked this tape? Is it because of Rusty's laptop getting hacked in episode 4? I chose to tell Derek that I completed the 'Fuck a teacher' task by showing him the tape and I know he has a loose mouth but I still don't see how the tape could've reached the Principal.
Either the DIKs are very stupid, and after the hijacking of their computer for the photo of Cathy they did not check for the presence of spyware, or it is one of the DIK who gives Burke the video.
As for the MC, the only time the game shows us that he doesn't have his phone is at the start of the game when he steals panties from the HOTs.
For the moment, the least complicated solution points to one of the DIKs.