VP, that's my point. The requirement is just to be "sole manipulator of the controls". Nowhere does it specify that you have to be a crew member of some sort, so you can manipulate the controls while being a passenger. And fulfill the requirements of the 90-day rule that way.
RTN, you can log this as SNY if you want to. The regs only specify which *must* go in the logbook, not which *may* go in the logbook. As long as you don't make false representations, so don't add it up in the "total time" column for instance.