Ex Post Facto in reverse

Stephens Media has an article this morning about an Arkansas mother's pursuit to make a recently-modified criminal law retroactive to allow for the early release of her son, currently serving a 10 year sentence for manufacturing and possessing methamphetamine with intent to deliver. The 1997 statute mandating that meth manufacturers serve 70% of their sentence was modified in 2005 to 50% if the person completes substance abuse treatment and obtains a high school equivalency degree.

This is not your typical lobbying of an ex post facto law, but it still fits the definition of a law passed "after the occurrence of an event or action which retrospectively changes the legal consequences of the event or action." Still, while this would actually be a constitutional move, I don't think the Legislature will be scrambling to adopt it.