Sublime Text Multiple Cursors: Getting OSX out of the Way

I had been ignoring this inconvenience for a bit because it wasn’t something that was hugely messing up my workflow…until this morning, where I needed to grab a table of stuff from a Web site and massage it into an array. For this, the column-based multiple cursor feature of Sublime Text is a huge time saver. The problem is [was] that the command to do this on OSX is command+shift+up/down arrow, and by default, these keyboard shortcuts are mapped to the Mission Control (ctrl+up reveals Mission Control while ctrl+down reveals all open application windows).