Hosting company messed up my site

A tech from the hosting company I use went in and did something to my site (he said something about the timthumb.php script). My site now won’t come up and I can’t access the admin area.

My site is wordpressonthego.com.

I have access via ftp to the files and am in process of switching to another hosting company. But before i can do that, i need to be able to access my admin area so i can get a copy of my site.

any help on how to do so would be GREATLY appreciated!

Thanks..

I’m getting the following errors now:
Warning: include(/homepages/19/d106013501/htdocs/wponthego/wp-content/themes/wordpressonthego/functions.php) [function.include]: failed to open stream: Permission denied in /homepages/19/d106013501/htdocs/wponthego/wp-settings.php on line 286

Warning: include() [function.include]: Failed opening ‘/homepages/19/d106013501/htdocs/wponthego/wp-content/themes/wordpressonthego/functions.php’ for inclusion (include_path=’.:/usr/lib/php5′) in /homepages/19/d106013501/htdocs/wponthego/wp-settings.php on line 286

Warning: Cannot modify header information – headers already sent by (output started at /homepages/19/d106013501/htdocs/wponthego/wp-settings.php:286) in /homepages/19/d106013501/htdocs/wponthego/wp-includes/pluggable.php on line 866