I would do a water change and put in the sand. Your water will cloud for a few days. If you happen to have an extra canister filter around you can use that to help clear the water. I would wait until the dust settles before adding any livestock. If all is well in a couple of day, add some snails and reef hermits. How did the big worm removal go? Sure looked gross.
Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
Have a great day! Brian