This is, obviously, the worst outcome that could happen for all parties involved.There is a very famous saying that has become a key guiding principle in real estate fundamentals: Money is made when you buy.

I would not necessarily stop the extra principle payment.

I’m sorry if this is vague but I am just truly looking for an ethical PM company that can handle everything for me. 

The project's primary goal is to offer comfortable and affordable living spaces while ensuring the property adheres to Pretty Good House principles and incorporates the sustainable building practices championed by experts like Joe Lstiburek and Allison Bailes.

I create a spreadsheet that calculates principle pay down using the built in functions for principle and interest (ipmt, ppmt).

Also, it goes without saying that you should consult an attorney; Okay briefly reading over your lease agreement, it's a good agreement but it is very loosely written and does not provide for many remedies prior to eviction so... that is something you should look to improve on moving forward, there should be an escalation of force in as $XX fee until rectafied and THEN otherwise eviction, also you should number your lease clauses.Regarding the current situation first and formost, I understand you live in the property as well but you should certainly take on a 'HANDS OFF' approach in regards to internal disputes amongst Tenants; you are after all a landlord, not the ethics police nor the real police.... if other Tenants have issues such as those they should inform you and then they should contact the police... if it's not police worthy than it is more than likely just internal bickering. 

It's just not legal and some would question the ethics behind it.

I've been amassing the info necessary to have a decent grasp of the principles required and the tools to be successful in wholesaling, to start.

You'd essentially be losing 2% on the spread, not to mention that technically your amortization includes some principle, which means that your second month, you will earn slightly less, and the 3rd month slightly less, etc., causing your negative spread to be even greater.On the other hand, you could try to pick funds or stocks that yield higher and capture the spread.  

(www.realestateexpress.com) I'm in Southern California also (Pasadena) so my road to licensure includes three 45hr college level pre-license online classes (California Real Estate Principles, California Real Estate Practice, and California Real Estate Finance).