Header error: cannot change theme, export, add or remove plugins WTF?

I am having some issues here. Yesterday I mistyped my site address so I had to add define(‘WP_HOME’,’http://example.com’);
define(‘WP_SITEURL’,’http://example.com’);
To the functions file. Now I am having all of these issues.

I disabled all plugins and tried to change theme and I still get errors. This is what I get when trying to change the theme to twenty fourteen

( ! ) Warning: Cannot modify header information – headers already sent by (output started at /home//wp-includes/functions.php:1) in /home//wp-includes/pluggable.php on line 1174
Call Stack
# Time Memory Function Location
1 0.0012 368472 {main}( ) …/themes.php:0
2 0.2954 23888576 wp_redirect( ) …/themes.php:34
3 0.2957 23889032 header ( ) …/pluggable.php:1174

Now the site is totally nuked and I cant even get it to load. WTF!?!?!?! Here is the error trying to get to the site.

( ! ) Fatal error: Call to undefined function update_option() in /home//wp-includes/functions.php on line 2
Call Stack
# Time Memory Function Location
1 0.0002 227928 {main}( ) …/index.php:0
2 0.0003 230808 require( ‘/home//wp-blog-header.php’ ) …/index.php:17
3 0.0005 248224 require_once( ‘/home//wp-load.php’ ) …/wp-blog-header.php:13
4 0.0007 257392 require_once( ‘/home/wp-config.php’ ) …/wp-load.php:39
5 0.0014 364192 require_once( ‘/home//wp-settings.php’ ) …/wp-config.php:89
6 0.0145 1821096 require( ‘/home//wp-includes/functions.php’ ) …/wp-settings.php:94