Nephi's 3-way Justification for Slaying Laban

I'm reading Denver Snuffer's "The Second Comforter" and happened upon this footnote that enlightened my understand of the Nephi slaying Laban episode:
Some Saints are troubled by this commandment to kill Laban. It is consistent with Christ's later teachings in the Sermon on the Mount, and consistent with God's dealings with mankind elsewhere. Laban's accusation against Nephi's brother that he was a "robber" (1 Nephi 3:13) was a ruse to justify Laban in killing Laman. A person was justified in killing a robber. (Exodus 22:2) Laban was using this as an excuse to justify his intention to kill Laman. Later, Laban commits the very act which he had earlier accused Laman of committing. In this case, as in the case of David (2 Samuel 12:1-7), Laban has made his own judgment upon his own head. Just as David condemned the thief in Nathan's allegory, Laban condemned the robbery which he was about to commit. As certain as Nathan's proclamation to David, "Thou art the man," is Laban's condemnation of the robber, "I will slay thee." Christ's instruction "with what judgment ye judge, ye shall be judged: and with what measure ye mete, it shall be measured to you again," is consistent with the commandment the Lord gives here to kill Laban.
From this I see 3 distinct justifications for the slaying of Laban by Nephi:
  1. The Law of Moses justified killing a robber, which Laban was when he chased Nephi and his brothers off and stole their property. (1 Nephi 3:25-26)
  2. Laban claimed the right to slay Laman, who he claimed was a robber. (1 Nephi 3:13) This is him complying with the Law of Moses. But further, since Laban claimed this right, he is "estopped" from objecting to Nephi's slaying of him. (See Stephan Kinsella's article on estoppel and punishment here, along with Matthew 7:2)
  3. The Spirit of the Lord directly commanded Nephi to slay Laban. (1 Nephi 4:10-12)
It really hit this one out of the ballpark for me. Nephi was not only justified in killing Laban because he was commanded to, but also via the Law of Moses, and of Laban's dishonest application of it (among other possible justifications). Simply beautiful!