It turns out there's a simple fix to this situation - just go the opposite direction a little bit (until you'll see which way you should go).
Go the opposite direction. The same can be done in organ improvisation when you feel stuck and not sure where to turn. Simply back up. This trick will be a nice turning point which will immediately result in a fresh idea of what to do next.
If in doubt, do the opposite of what your inner dragons are saying.
PS Attention to all Total Organist members: My new BWV 630 Practice Guide is included into the Total Organist program, so subscribers of all levels of memberships receive it at no additional cost. This Practice Guide is designed so that you won't have any feeling of panic or being lost while practicing but instead firmly progress in a step-by-step manner like moving on the train tracks and inevitably reaching your goal of mastering this piece.