So the issue of a pardon is off the table, based on GA law, but the issue of a commuted sentence may be tried:

And while criminals can ask the parole board to commute sentences right away, the board “will consider a commutation of a sentence imposed in other than death cases only when substantial evidence is submitted” showing “that the sentence is either excessive, illegal, unconstitutional or void” and that “such action would be in the best interests of society and the inmate.”

A sentence for RICO in GA is not excessive, illegal, unconstitutional, or void, so I expect such a tack to go nowhere, but you know it will be attempted.