Institutions paid lots of money to hype up the price to 18, along the way they sold most of their shares. Now you have retail buyers bought in above 12 struggling and scratching their heads wondering why there are no support.
There are a couple of reasons of lack of support:
1) Heavily shorted
2) Institutions who sold on the way up are probably shorting Rimm too at this point.
3) You simply can't sell recycle plastics (BB10).
4) Next quarter earnings will be horrific, Rimm will spend all their cash launching this piece of #$%$. Hence there is nothing to look forward to. This company is done! $2-3/shr in 3 months.