Sorry to hear that.
First I would lower the water level in your tank and brace the top with some kind a clamp to prevent further cracking.
Maybe the LFS
will take care of your live stock for a couple of days until everything is up and running again.
A friend of mine just moved and he took down the tank and set it up at the same location the same day. He just kept 80% of the water and reused it. The rest of the water was replaced with filtered ocean water from the local Aquarium. As far as I know, everything survived.
Might also depend on how hardy your live stock is.