Adsense Issue: Adsense Leaderboard Ad Appears Inside My Blogger Dashboard

I successfully implemented a template change in one of my blogs - the Prepaid Cellphone Portal. Unfortunately, something went awry that is annoying me now.

The end result of the said template was an issue with Google Adsense. An adsense ad in leaderboard size format is appearing right inside my Blogger Dashboard, in the Design Tab/Page Elements.

This post is my quest on finding the solution to remove it.

Every publisher of adsense ads in his or her website/blog knows it is wrong to click on your own ads. I'm worried that I may inadvertently click on that ad while making modifications on the page elements of my blog template.

Of course, I tried searching online for a solution but so far, have failed to find one. Finding none, I resorted to posting my problem at the Google Adsense Help forum. Here.

The last resort would be to go under the hood (again), study the html/xml codes and perform trial and error. But I'm not in the mood for that right now.

I'm hoping that this adsense issue would be resolved soon. I'd appreciate suggestions from any of my helpful readers/visitors.