Scenario:

• You push to production
• The push broke multiple things
• That same build did not break qa or dev
• As a developer, you don't have prod access.
• There is lots of pressure from above to get things working agian.

Specifics:

• PHP/MVC application that is API-driven in Zend.
• Deployed to a few servers.

My question:

While investigating, lets say I have a hunch that something is wrong. But, I don't know for sure. And, of course, I can't test things in production. If I have a suggested fix based on that hunch, would it be wise to try and apply it and see if it works, before understanding what the problem is?