If you considered it an unfair contract why did you sign it. I assume no coercion was exerted by the other party. Was it purely for financial gain. Was there a time limit on the agreement or was it enduring?
It hardly paints you in any kind of favourable light now does it?
Was this not a case of you boasting how you put one over on big business, taking their 30 pieces of silver and later reneging on the NDA? Hardly something a person of integrity and any kind of respect for the law would want to admit to.