in a situation like that i'd like to see both happening. start the emergency procedure, and while it's running think through if you missed anything or if there is an alternate approach.

just had that happen. we had an overloaded server, and while we tried to figure out how to make the server faster, after some thinking we realized that the better long term solution was to change some of the architecture so that the server would get less load to begin with.

that was definitely not what came to mind first.