They have a payments 3rd party website, but it's hard to find the link from their main website. 

I would say it depends on the cost of the STR.

You can purchase it as individuals or through an entity, like an LLC.  

...and the account is closed.

Perhaps it is as simple as him paying on the 15th instead of the 1st.

The bank could call the loan due, but this is typically not something that happens often.

There's a lot of info here on BP and I'm just trying to take it one step at a time in the "Get started" section of the website.

The only thing that spreads faster than a wildfire in a 100mph wind is everyone's "expert" opinion.I think people visualize an amber quietly floating through the night sky like in an old Lassie movie. 

Cash out would take me from a 7.25% rate to 8%, which is a few hundred dollars per month, and they will likely make me wait all through March to do the cash out to meet seasoning which is another $2400 interest payment I could avoid if we could refi by the end of this month.

While the math per door is roughly the same, my thought is that I will have more doors still rented while I renovate one, and the overall costs for maintenance is roughly the same.