Posted for Thomas Low <thomas.low@sri.com>:

 I had a similar problem, which appears to have been permanently fixed by
 moving the up-limit reed switch back, away from the hard stop.  It's been
 three years or more since my flaps stuck in reflex, and it happened on three
 occasions before this fix was applied.
 
 Tom Low
 LNC 235
 N31CD
 
"""
  The solution was to place a bushing to stop the actuator getting "locked
 up".
 I had a  shop do the work but if the theory makes no sense I could organise
 a
 photo.
  
  """
  My ES has a little over 800 hours on it. In that time I have had
  three
  instances of being unable to retract the flaps from full extension. In
  each
  instance I was able to unhook the motor from the flaps and get it to
  run. In
  each instance I found that the motor had pulled the actuator rod past
  the full
  extension limit switch until it jammed inside the rod's housing and
  popped the
  circuit breaker.
  """
"""