Someone suggested an alternate online 360 host but I can't remember the name of it. If I can find it I'll post it here.
Momento360 will post 360s. I plan to use it to post 360s, which I will make by stitching together my hangar.com original photos with PTgui. It will certainly be a more cumbersome process than using hangar, but, assuming momento stays active, it will provide an alternative.