If you use the golem and start logging out while flying you will stop midair.
If you stall the golem long enough the golem will dissapear, but you will still be midair and you'll be able to run around without falling down.
You are now free to explore Antorus, instanced Argus or even leave the instance and run midair anywhere else you want. While midair you will also not take any damage from certain abilities (like any of the mines or wires on Imonar as an example).
I haven't checked if you can bring this into other dungeons/raids but i could do it in both Broken Isles/Dalaran and Argus.