They already DO hate Cryer with a vengeance due to synth weed. For the longest time I attempted to target Cryer ships, but with Cryer's activity level being lower than that of the Outcasts, it is somewhat difficult. Also with the general consensus being that Cardamine alters the genetical structure of the user, it is hard to imagine a cure per se.
EDIT: In real life, genetical disorders are for the most part impossible to treat. In those rare cases where it is possible, it is done through marrow transplants (i.e. replacing the defect/altered genes) and not merely through popping a pill.