In an organization of any appreciable size, things change all the time.. and I'm not just talking about code (for which you could have a code freeze in an emergency situation like this), but the external systems you're connected to could change for reasons completely out of your control. Content changes can break stuff because of bugs in your code. Legacy systems could require all sorts of ongoing tweaking and maintenance. And, yes, heat can break your software if the server it's running on overheats.
Twitter is not a palm_os app.