This is where you may specifically want a lawyer to take action for you depending on how difficult evictions are in your state. 

If the couple is fighting, emotions will rule their actions, not common sense or financial responsibilities.

Make sure buying and holding the property will make sense before taking any action though.

.- Balance Learning and Doing: While it's great to learn, make sure you're also taking action.

This situation was beyond my control and I took quick, aggressive action. 

They can pinpoint the issue and get your garage back in action fast.I found a local guy in Portland who seems legit: https://portlanddoorsandlocksguy.com/.

I suspect I may need to go through a Quiet Title action. 

Most likely the state where the property is located is where lawsuits would be brought if they are something for personal injury like a trip and fall or something of that nature because the “cause of action” arose in that state.

I am mold sensitive, so I cannot risk buying a home that has hidden mold.

Figure out how you can grow into a role that satisfies you, continue your drive into making a name for yourself in the real estate space, and you will absolutely benefit from the fruits of your labor if you take consistent action over the long term.