No. I admit to doing someone a favor (such as handing over fap material in this case) that involves posting, but posting _for_ a banned user (careful context) is different.
Yeah, he obviously wanted you to post a drama about it, which you did, and then just admitted to 'giving him fap material' which is more or less the same thing as saying that you posted this FOR him, since he wanted a drama, it could be considered as the OP.