How Not to Use Fiberglass

I was riding the bus when I saw this repair job on a roof box in another lane. The guy had cracked his box, I guess, and tried to repair it with fiberglass cloth:

No MacGuyver

The thing is, I couldn't see any resin. It looks like he just used the fiberglass cloth and then either epoxy or some other yellow foam to secure it down. Most of it was flapping in the wind. I guess it would work as a patch, but without the resin it wouldn't be strong at all. For reference, fiberglass is:

Cloth      +     Resin      +    Hardener