You could defend it, but I doubt it's worthwhile. 

One who is prepared to defend you on it.

I recently read the article defended below about how a city back east is putting liens against landlords for tenants unpaid bills.

Do what every you can to defend your property and do not fear political pressure!

This looks like it can qualify for section 121 unforeseen circumstances that  IRS recognizes.I am sure all this is documented and you will have easy time defending it as well. 

Remember, it will still cost a lot of your time/money/aggravation to defend a lawsuit that you may eventually win.

You have to document your intent to defend your position. 

If two people apply and both "qualify" but the second person has a better rental history and more income, then the second person is more qualified and you can rent to them as you want so long as you can defend your reasoning.

Re: redemption of property, returning deed to ownersbought this property at tax auction...The constable sent the deed to me and it states " I hereby convey to the grantee (me)all of the rights, title, and interest owed by the defendants in the property described above"So I guess what im asking in your experience ...is there anything I have to do before mailing this deed to the former property owners?

First, my job is to defend clients who ended up near the line, whether by accident or on purpose.