I am surprised it is a backyard you are speaking of. This type of restriction would be a difficult one to single out statues, seems a bit discriminatory relating to your certain case. The number of items that can be placed in a back yard that are 5-6 feet are numerous E.G. Bird feeders, bird houses, water fountains, swing sets, childrens toys, umbrellas, clothes lines, ect.
I was not aware that a fence could not be 6' in your de"fence". Maybe 5' with barbedwire will be sufficient
Normally restrictions are strict for the side and front yards of homes for curb appeal. I have a swing set that I am sure a number of neighbors in Orchard Hill would not want to look at all the time, but the purpose is for my children to enjoy it. Back yards are meant to be lived in.
If this were my next door neighbor I would focus on the uncut grass. I actually am 95% sure I know what house you are speaking of. In this situation I think good fences make good neighbors and your 6 foot fence, as long as it is tasteful, should be allowed (instead of the enforcement/development of backyard restrictions).
I would also look into possibly a City ordinance to see if there is a height restriction for yard ornaments in case that Eifell tower comes along!!
I believe the choice to decorate and display things in your yard is a very important feature in a neighborhood otherwise it would be a cookie cutter look with only the number on the mailbox to distinguish your house from mine.
Good Luck,
The meeting in September will be a good opportunity to bring this issue up.
Rob