Glue visual elt not loading after save

I have a strange problem.

I created my first Visual ETL job; it runs fine, but there are a few mistakes in the output schema.

The problem is now when I try to open the job, it will not load in Chrome or Safari. Maybe it is too large? I've been trying to figure out if I could clone it or get the unlying code to make it smaller, but I can't figure out how to do that either.

Has anybody come across this? Any solutions?