The moral implications are no different than the moral implications of spending time with his girlfriend during his anniversary. For all anyone knows, they were still in the suitcase from that out of town trip.
So then we can agree, he was a cheating man, immoral, liar and didn't like his wife at the time of her brutal murder. Not only on his anniversary, but some could say he was a chronic selfish cheater. But, I didn't want to get moral on this....just sayin his alibi is based on his concern for his wife, calling his sister in law and all, yet he had condoms in his suitcase....those two behavior are contradictory.