I can't delete HTML widgets in template layout mode, but they're empty?

When I’m editing the the widget’s over lap and there isn’t any content in them but it still won’t delete the widget when I’m in edit template layout mode. Any idea why this would happen?

This is what it looks like when the widgets overlap:

Hi Andrew,

The issue was a parse error in your templates source code. There is a ending div tag, Where there should be a starting div tag.

We can now take this issue off line for further discussion if you would like.