Val Prieto cannot undo the harm that he has done. So what would be the honorable thing for him to do? He could start with an apology to Killcastro. Not on Killcastro's blog. That would be easy. But on his own blog. Another "Shame Post" but this time with some sincerity and genuine contrition. That would be the mark of a man. We should all live long enough to see that day because we would all live forever.
Whether Killcastro chooses to accept Val's apology is another matter. There are things that cannot be forgiven or forgotten. An attempt against one's family is one. But because Killcastro wouldn't accept the apology doesn't mean that Val shouldn't make it. On the contrary. Common decency demands it. His conscience should also.
An apology would do Killcastro no good. It would do Val a world of good.