She sends blurry cell phone pictures of the "extra mess" or "oh my god they had a party" and I say "ok" just to avoid confrontation and to keep her happy because I'm 4 hours away and need her.

He's already been confrontational and said he won't do the work until you pay him more money (more money than you have already paid him to do the work that is unfinished).  

I am such a non-confrontational person(I know, I should probably hire a professional PM), we bend over backwards anytime a tenant report an issue, but today his nastiness certainly induced heartburn.

A check via certified mail is what anyone with common sense would send to avoid confrontation and ensure a paper trail.

Because it was S&L, I've got that someone was trying to get a mortgage on my name.I called my ex (we have good relationship) and confronted him.

It's best to catch bees with honey rather than vinegar so try to keep this neighbor and your relationship on a good level and not a confrontational one.Politely tell him that you looked into the situation and that he or his insurance could be liable for any damages to the structure of your garage.

Do it matter of factly and non-confrontational, highlight the date/time you noticed the problem, when you originally communicated it, and who you communicated it to on that date.

After confronted, he said he took it down when we would not let him out of the contract.

Title companies don't just ignore liens and when confronted say "you go figure it out."

I know I need to confront him, I just don't know what level to approach him with.