My first thought would be to sell the property as soon as possible. Homeowners associations are usually loaded with egotistical self important tyrants. I'd get as far from that as possible. I'm afraid that you won't be able to try most of the useful suggestions above as long as you live there.
I hate to sound negative, but I've heard some real horror stories about similar situations.
I've used regular Feed Salt from the local Feed Store. It comes in 50lb bags cheep! No vinegar or soap. Dissolve 1 cup per gallon of watter. The grass seems to come back up in a few months. Bummer but it looks like you could re plant things there in time if you wanted to, or spray it again. ... View related article.
