Stopping Tenex...bouncing off the walls

Hi All,

Our DS has just been stepped down off of Tenex.  He seem MORE HYPERACTIVE then we have ever seen him...much more so than before the meds.  We are not sure whether ..this is how he actually is or if it is still a reaction to the Tenex.  He was on the Tenex for a year, and we stepped it down over the last month.  He has been off of it completely for 6 days. 

Anyone experience this when eliminating Tenex, Guanfacine or Intuiv?