Wow, that's a pretty huge mess! Okay, you sold me on wearing safety glasses. Heck, even getting it on your arm takes a long time (and sacrificing many arm hairs) to get off. And I have a shirt with an eternal "snotball" of Great Stuff still attached to it. Real lovely. Maybe the can should advise wearing a hazmat suit instead of just safety glasses.
Good luck with the clean-up.