Denied myself access to GPO

I am a member of Group1  which has permission on GPO's (granted as delegate permission)

The Allowed Permission is : Edit Settings ,delete,modify Security

Also i am member of Group2 where i mistakenly set the permission for Deny on (Apply Group Policy and Read)

Now the GPO where i set this deny permission show inaccessible in the GPMC console.

I tried to follow http://blog.rhysgoodwin.com/windows-admin/deny-yourself-access-to-a-gpo/

http://social.technet.microsoft.com/wiki/contents/articles/how-to-restore-settings-if-you-accidentally-modify-the-gpo-permissions-and-give-deny-access-to-enterprise-admin-and-domain-administrators.aspx

However it says i do not have permission

I am not a domain admin.

Is there any way i can fix this or only domain admin can fix this.