If you rotocast the piece in resin and maybe fill it with foam, you could make a little hook type ear attachment, much like headphones and bluetooth headsets!
It's too bad about that. It was some impressive looking armor. I've got my own custom super saiyan hair (foam can do so many things) and this making me wonder what I can make to work with that.
I bet you could make some decent armor from EVA foam. Only issue might be how big those shoulder pieces/curves are. I guess I have something else to add to my to-make list.