In a civil proceeding, (not the rule of mob), how would the conflict in legal opinion(yours vs his)  be resolved?    If one is  on the losing side of the decision, what should that person's commitment to the ruling be (assuming they don't want, or don't have a higher review to point to)?

Your statement is not a legal review, it's a personal opinion. 

P.S.   We are a civil nation, civil law must be honored over religious law when in conflict.  It doesn't matter if it's Christian, Jewish, Muslim ...        
Of course a religious person can certainly follow their own moral compass, including breaking civil law, if they are willing to accept the consequences.  Millions have made that choice, it's not a fantasy.   

Personally, i've never had a problem reconciling the two, you can't cage a heart, or mind.