In my opinion a “setup” or the type of “frame WC” hypotheses discussed many times before is really a stretch, whether you are talking about the motivation factor (as here), or as a disposal strategy ( sorry to use that word).
As a motivator that is very unlikely (you would already need to know the end game and anticipate the community/LE reaction.)
There are other more likely motivators:
- Hookup + Awkward situation escalated
- Opportunity + Attraction
- Power + Attraction
- Opportunity + Power
- Drunk/drugged perp + Opportunity
- Etc.
The more complicated you make the scenario for someone so open with friends and SM and involved in the community, the less likely in my mind.