On Mon, May 16, 2011 at 2:13 AM, Neil Kandalgaonkar <neilk@wikimedia.org> wrote:
I changed the picture. I'd like to note that I did this not owing to any
'authority' I might have as a WMF employee, just as a regular person
associated with Commons.

 
Actually, given that the template was cascade protected by virtue of it being on the main page, only administrators can edit it.  You're not an administrator on Commons, but you do have a staff flag.  Therefore I'd say that's a staff action.