I'm not 100% sure, but your logic seems correct.

I'm always an advocate for learning something new. And seeing things in MongoDB is always an eye-opener for relational db users. Some tools that I find helpful are:

• Robomongo - (free, cross platform, and open source) - http://robomongo.org/
• MongoChef - (free for personal use) - http://3t.io/mongochef/

Both tools will allow you to do what you're saying above (and revert if it doesn't work).

Curious to hear your results, because I can see it being useful for myself and others.