I have another one under remodeling that I plan to do as a short term rental (no experience yet, but this house is next door to my home).I have a dedicated website that I maintain myself where I publish the details, applications etc, also list it on zillow and do the screening through mysmartmove.

Quote from @Daniel Bryan: Go to BUILD YOUR TEAM at the top of your screen, and you can search for other MEMBERS or LOCAL MEETUPS.

With all things, tenant screening is huge!

How do you screen for things like this?

You mentioned a couple times that you had "feelings" of some sort about these people- reacting to your feelings when screening tenants is a good way to get caught up in a fair housing case.

Quote from @Ryan Fitzgerald: Go to NETWORK at the top of your screen and you can search for other investors and investment groups in your area.

Is there anything that should be done from a screening standpoint for these existing tenants? 

You found a new tenant immediately, so there's no financial loss to you except for the time spent marketing, screening, etc. 

Buying in a good location and screening tenants really well minimizes a lot of this type of risk. 

I think no one should invest with anyone who doesn't put 20-30% of the capital in themselves as a step 1 screening.