Legally and ethically this would not cause a problem if you decided to back out of the deal.

Also, he admitted to illegally installing a plastic access hatch to get to the pipes (they need to be metal legally), which lets me on to the type of work ethic he has.If I hire a property management company at 10% of rental income, I'll save about $70k a year in expenses and make $200k more if they can rent out another 20 units (I figure 10 units will always be vacant due to natural rent cycles).So, do I ask the sellers to let them go on the day of closing?

I should also say that I find a thread promoting Atlanta, from a real estate agent in Atlanta, to be a rather ethically dubious form of advertising.  

Let them walk on the inspection and expect that you'll find someone more ethical to buy.

Start networking with the ones the PM recommended then change if you want but be ethical about it. 

Ethical or not, this thread is about deal structure with an agent. 

My litmus test: Is this ethically okay? 

Sarah Palin did not quit to make money, she quit because of all of the unfounded 'ethical allegations' were just too distracting for her to fulfill the job of governor.Here is THE question.

\While you may allow someone to assume more work was done, stretching the truth is "fluffing" and against the Code of Ethics for Realtors, so you need to take care in what you claim.

But, the logic of why this could be considered ethical seems like a logical argument.