It didn't. There never was an off hand for MM0. Go look at mashmonster.com where the MM lists are. It never existed for MM0. It exists for MM1.
I actually remember a period of time when people were certing MM0 off hand and I thought it was strange since I didn't have to in order to try the MM1 off hand. The rules didn't say I had to when I certed MM1 off hand (in fact they explicitly said I didn't have to). I remember Jedd Johnson being one of the people who certed MM0 off hand. Haven't seen an MM0 off hand in a while though so I figured we reverted back to the original rules.
think he took that as his MM0 period. There is no list so that is all I can think.
that MM0 off hand cert for Brent was October 2013. Hes listed as regular MM0 on mashmonster.com 2010. Jedd's MM0 off hand also wasn't that long ago and I know hes been on the MM ladder for a long time (his regular MM0 is listed at 2003 and that is 8 years before I was a member of this board). I remember these MM0 off hand certs very clearly and thinking how strange it was when they were happening. Mike Rinderle also certed MM0 off hand during that period. There was never a list for it.
Here is Jedd's MM0 off hand video in September 2013: