IMO the picture show lots of almost over the top remediation that to the layperson should be comforting.

The remedy for what you are experiencing when it comes to real estate investing or any other form of investing is to leave emotion out of the equation.This is not a hobby.

That being said, if the 1st position has to foreclose, the MOA has no default remedies for the investor, though a RE Attorney should be able to draft a MOA with default language to help protect your F&F. 

But the opinion basically says that landlords may exercise self-help remedies when it comes to "trespassers in possession."

I believe that since I moved my family to NC after hurricane florence this year to do remediation and reconstruction.  

It might play out where a foreclosure of the LLC is allowed for a single member LLC, but a charging order is the only remedy for a multi-member LLC.

But before you even get that far, how much lead remediation work is required? 

I cant imagine a situation where you would be in trouble over asbestos in the joint compound only(because it is sealed), except when you go to sell (disclose to buyer) or take on a big remodel (tearing out walls).I think it is reasonable to include the cost of remediation by a professional company (shockingly expensive to do by the book) in your negotiations on price, as the next buyer will likely do it to you.

If things come back positive, then I have to decide again whether to let it go or do invasive/expensive remediation (i.e. scrubbing the air and wiping everything down).

Are you in a market where asbestos remediation is common?