My offer of $335k was recently accepted on a house that needs to be renovated and I am now in the option period. It’s in east Austin, 3bed 1.5bath. Houses in this neighborhood that are renovated go for around $450k.
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You can put your eyeballs on what is going on (rehab, quality of property mgt, etc) If you do not have the right team in place as an OOS investor you could have an unpleasant and unprofitable experience.

When it’s not in the lease that the tenant cannot contact the owner, what are your action steps as a property manager when unwanted contact occurs from the tenant to the owner?

Lance has allowed her to sleep in there for weeks at a time (she's homeless), and I have had literally dozens of unpleasant encounters when trying to do my laundry.

I've been laying low for a while due to an unpleasant on-going mediation on our acquisition in late May.  

We want nobody to feel they are receiving unwanted solicitations. 

I was delicate before- struggled hard to get me and my credit to where I could begin doing something, and now feel like some giant money vampire has decided to feed on me. i can't do this any more. i have a wife with no kidneys and on home hemo dialysis 5-6 days per week 6-8 hours per treatment, and getting unwanted pay cuts is no way for a 54 year old to live.

Not that one needs to be a difficult and unpleasant person to subs, but just super protective of one's investments.

What could I do as a landlord if something like this were to happen again - unwanted frequent guests of a roommate...

You'll be completely unprepared for when something unexpected and unwanted happens (which it will).