I spoke to a minister who has extensive experience in these areass.
His basic point about your husband "getting off the hook" is to trust God who judges justly. God won't let him off the hook -- even if the sack-less elders in your church do.
For your husband to really repent over this will mean many changes in his life -- not just saying "I'm sorry". Repentance means a change of mind and direction. You'll know when he's really repenting. If he does, the ball is in your court. You may already have moved on and re-married. Who knows? If he's "repenting" just to legitimize his affair in an attempt to "get off the hook", God isn't fooled. Don't worry. He, the OW and the sackless elders will account for their actions on judgement day. God is merciful, but he's also just.
You have acted righteously in this matter, your husband has not.
