Possibly.  You had asked before, where did the money come from.  My thought is they may have done very well for themselves in the last rise and fall.  It would make business sense and be in the ultimate interests of shareholders. 
Considering how tight-lipped HIMR is on things and from a common sense perspective, they should already be buying up shares to retire.  If they played it right during the last few weeks, they could be very close to a decent number to begin retirement (stage 1).  I can't see that it would make any sense to announce that you are going to buy back shares and not be in control of your own market.  Honestly, would you walk on a car lot and say I am buying this car and just let them set the price?
First (probably not the first, but high on the list!) rule of business, is not to show your azz to soon!  I think they know what they are doing.