The sentence is semantically incorrect. Although used often, especially in song texts, the more correct version of your specific sentence would be without the "like" or with a word such as standing or feeling:
The news left me a fool
The news left me standing/feeling like a fool
to cause or allow to be or remain in a specified condition leave the door open, his manner left me cold
In your example
The news left me flabbergasted
I read your sentence as:
When I got the news, it affected me so much, I was left looking/feeling like a fool.
