If that were an issue, you'd think the habeas petition, in their usual everything-but-the-kitchen-sink style, would mention it, but it doesn't. The only real complaint about the divorce proceedings is the claim that the defense's resources were limited because the divorce court had forbidden the disposition of marital assets. There's nothing at all about simultaneous proceedings, and given that the divorce judgement didn't come down until six months after his conviction, it seems far more likely that the divorce proceedings were on hold until the criminal trial worked itself out one way or the other.
In other words, this particular story's more than likely a piece of advocacy journalism.