HELP (Word Clock Widget)

Hello,
I′m building my site, speakspanishonskype.com. I decided to try the World Clock Widget, then this showed up (below). Now I can′t enter my WP admin or Wp-login to eliminate this plug in and set things back to the way they were before. Does anyone know the answer to my problem? I′m new to WordPress, so your help is GREATLY appreciated. Thank you.

Warning: DOMDocument::load() [domdocument.load]: URL file-access is disabled in the server configuration in /homepages/4/d369480493/htdocs/app369480506/wp-content/plugins/world-clock-widget/worldclock.php on line 49

Warning: DOMDocument::load(https://speakspanishonskype.com/wp-content/plugins/world-clock-widget/worldclock.xml) [domdocument.load]: failed to open stream: no suitable wrapper could be found in /homepages/4/d369480493/htdocs/app369480506/wp-content/plugins/world-clock-widget/worldclock.php on line 49

Warning: DOMDocument::load() [domdocument.load]: I/O warning : failed to load external entity “https://speakspanishonskype.com/wp-content/plugins/world-clock-widget/worldclock.xml” in /homepages/4/d369480493/htdocs/app369480506/wp-content/plugins/world-clock-widget/worldclock.php on line 49

Warning: session_start() [function.session-start]: Cannot send session cookie – headers already sent by (output started at /homepages/4/d369480493/htdocs/app369480506/wp-content/plugins/world-clock-widget/worldclock.php:49) in /homepages/4/d369480493/htdocs/app369480506/wp-content/plugins/si-contact-form/si-contact-form.php on line 1410

Warning: session_start() [function.session-start]: Cannot send session cache limiter – headers already sent (output started at /homepages/4/d369480493/htdocs/app369480506/wp-content/plugins/world-clock-widget/worldclock.php:49) in /homepages/4/d369480493/htdocs/app369480506/wp-content/plugins/si-contact-form/si-contact-form.php on line 1410