Fool's Errand: Redemption by Nick Zentor:

Nick Stone was working with the newest state-of-the-art 3d TDM systems on a special project when it unleashed his angry alter ego, seeking redemption for an injustice that had him sent to Aton 5, the purgatory of the galaxy. In an effort to set the records straight and exonerate himself from an unjust sentence in purgatory, Stone used the computers to do the detective work necessary to track down the evidence lost in the past shadows, while a catastrophic nuclear refraction gained the attention of his alter ego and forced him to fight dangerous unseen alien beings from another dimension.