Site down, locked out of dashboard after update

The Jetpack update failed, and I’ve been booted to a page that reads:

Warning: require_once(/home/content/18/2026618/html/wp-content/plugins/jetpack/require-lib.php): failed to open stream: No such file or directory in /home/content/18/2026618/html/wp-content/plugins/jetpack/jetpack.php on line 87

Fatal error: require_once(): Failed opening required ‘/home/content/18/2026618/html/wp-content/plugins/jetpack/require-lib.php’ (include_path=’.:/usr/local/php5_4/lib/php’) in /home/content/18/2026618/html/wp-content/plugins/jetpack/jetpack.php on line 87

This is also the page I get when I go to my wordpress login page, plus, my site is completely down as a result, so I’m pretty much stuck here. Any suggestions? The site is boysbearsandscares.com. Thanks!