According to an article from Brian McIntyre of Shutdown Corner, Hardy lost $100,000 of his base salary because he didn't participate in at least 90% of the team's offseason workout program in the 2012 and 2013 offseasons. This stipulation was a part of the rookie deal his former agent negotiated for him, so even if he wanted to try and get the money back, there's nothing that Hardy can do to recoup the money.
From Shutdown Corner:
Hardy is entering the fourth and final season of a four-year rookie contract from 2010 that was originally worth $1.906 million. The 2011 collective bargaining agreement added $95,000 to his 2011 and 2012 base salaries and Hardy's playing-time in those two seasons increased his 2013 base salary from the league minimum ($630,000) to $1.35 million.
However, Hardy's contract includes language that would reduce any base salary escalation he earned by $50,000 for each year where he did not participate in 90 percent of the offseason workout program. Hardy's base salary is now $1.25 million, a $100,000 reduction that shows that the 2010 sixth-round pick out of Mississippi did not participate in at least 90 percent of the workout programs in both the 2012 and 2013 offseasons.
Hardy is represented by Drew Rosenhaus, who did not negotiate his client's current rookie contract. That deal was negotiated by Hardy's original agent, Ian Greengross.
While it's not a huge financial blow to The Kraken, it probably stings a little to know that he left money on the table. However, if he plays as well as he says he's going to play in 2013, a measly $100,000 will be the least of his worries when he inks a new deal before next season (hopefully with the Panthers).