As Trips said, it won't hurt to drive home with it like that. And you shouldn't have to remove the struts. Don't make any sudden stops. If it will make you feel better, you can run some rope between the hatch latch and one of the cargo rings in the storage area.
There is the slight possibility of carbon monoxide getting into the cabin but modern cars don't produce that much CO and rolling the windows down
should keep you safe.
Should; if you notice any
symptoms of CO poisoning, get help immediately.