I can't log into my own wordpress site!

I tried to verify my site with google and included some of their code into my site. The verification was unseuccesful and since then google has been alerting that my site is infected. I am unable to log into wordpress to remove/change the cose due to the following error: Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 491520 bytes) in /home/kmaustin/public_html/wp-content/plugins/wp-e-commerce/wpsc-languages/EN_en.php on line 494

How can I get back into wordpress to change/verify my code??