When in quicksand, don't struggle. Lay back, relax, and let yourself float. It is a legitimate difference of opinion...ethics is not a subject any two people are likely to agree on 100%. It is possible that something that is against your principles to do is not at all against someone else's principles. Doesn't make it right. Doesn't make it wrong. Just means you have a different set of values. Relax. Float. This too will pass.