spike

spike v.  To defeat a selection mechanism by introducing a
   (sometimes temporary) device that forces a specific result.  The
   word is used in several industries; telephone engineers refer to
   spiking a relay by inserting a pin to hold the relay in either the
   closed or open state, and railroaders refer to spiking a track
   switch so that it cannot be moved.  In programming environments it
   normally refers to a temporary change, usually for testing purposes
   (as opposed to a permanent change, which would be called
   {hardwired}).