You took far too much of one of the most potent benzos out there, due to its amazingly long half life.
Valium's active metabolites have a longer half life, but Clonazepam itself (a full-agonist at the BZD receptor, unlike Desmethyldiazepam which is a partial agonist) lasts for at least two days at a high dosage. It feels a lot more potent that Xanax for the people it does work for, but for some it is useless. Truly a YMMV benzo, unlike Xanax or Valium: extremely potent to some, useless to others, paradoxical effects in others, not a well tolerated benzo to some.
2mg of Klonopin feels like taking 1mg of Xanax every 6-7 hours until you reach about 4mg xanax, which makes me question the equivalency charts... did they take the long half life in to consideration?
Time is the only cure, have a good meal and drink some water, maybe have a cup of coffee to offset the sedation? Clonazepam gives you one of the strongest body highs of all the benzos, and leaves your mind relatively clear, albiet free of anxiety and panic. It is for this reason that it is used for epilepsy, due to its super-potent anxticonvulsant abilities, which translates in to loss of balance much moreso than xanax or ativan, for example.