[LifesGreatestGift]

open file
./clientscript/ckeplugins/vbimage/dialogs/image.js

around line 257 you will see

	        },{
	        	type: 'checkbox',
	          id: 'remote_file',
	          label: me.editor.lang.vbulletin.retrieve_remote_file_and_ref_local,
	          labelLayout: 'horizontal',
	          setup: function() {
		        	if (me.editor.config.vbulletin.attachinfo)
					{
		        		this.setValue(true);
					}
	        	}
	        }]

change

		        		this.setValue(true);

to

		        		this.setValue(false);

UPLOAD the changed file. Clear cache. Done.