Could be anything. For starters, traps are also a time honored way to play things. Invite somebody you want a hold on to your place for a party or something, get them drunk or otherwise in a state of confusion, get them to do something illegal or something that just looks so while they are confused enough that they may not figure out what exactly is happening, take films or photos.

Then Brand maybe vaguely remembers something was going on back then, got his wake-up moment and started to change, Diddy or whoever has the photos never used them because they didn't need, or Brand didn't become somebody they would have seen as useful enough for them, but now Brand is scared stiff that there are photos and they might come out because what is going on with Diddy.

Or maybe there are no photos or film and it was just a drunken (or other substance use) weekend, not everything they do is part of some nefarious plan.

Or Brand may have been working for the WHs the whole time as a mole in those circles, dropped out when he no longer could stomach it. There may still be something like photos, if somebody works as a mole when the group he has infiltrated is as dirty as those people are they sometimes may not be able to avoid doing at least some level bad stuff themselves in order to not have their cover blown.

I still think that it is way too early to draw any concrete conclusions about things like who is who or whose side they really are, or have been, as the game is still being played, and out of necessity we are of course not being told even near everything, or anything at all especially when it comes to the smaller players like Brand. Maybe a good guy, maybe a bad guy, may have flipped, may have worked as a mole so was always a good guy, may be a bad guy who figured where the wind is blowing so decided to pretend he has changed some time ago... who knows.

Well, maybe we will never know.