I commented on your intro post, If you can post a little more info, we could assist a little better.
If you can post your tank perimeters, and any pics so we can get any idea of the current shape. We can see what may be the best approach...
If your aiptasia is way past controllable numbers then giving your rocks an acid bath may be the best solution, however if the aiptasia is within controllable amounts, there are several other ways to control them as opposed to tearing down the rock work and restarting....
If you have to tear down I would recommend cleaning your sand(messy job) or if funds are not an issue, Just scrap and replace sand all together.(but lets confirm this is what you need to do first.)
Don't Boil or Bleach your rock... Though they both will get rid of the nasties, they will leave behind the rotting material which will be a nutrient nightmare when you go to restart....(Power wash, Set in sun to dry out for a few days, Give a Muratic acid bath, Allow to sit in sun to dry, now you are resdy to resuse; but lets make sure you need to do this first)
If you tear down your tank, you may want to consider a rubber tub/stock tank to put your fish and coral in, unless you have another container to mix salt in for water changes, because they wont have nearly the beneficial bacterial filter as the main tank so your going to have to do water changes often....