Damn it. My started doing the same thing now. What i did to trigger it is fold the front cover back and insert the flap into the loop. not in the stand position but just like folded book. now there is a little room where the crease that is used as a stand part is sagging a bit. No sleep mode triggering. Now if i use my left hand to straighten out the crease and make it flat against the back of the ipad and then use my right hand to hold the ipad, sleep mode activates. This can get annoying really fast. I guess I'll shoot a video little later of how this triggers. I guess its time to involve customer service as this is only going to get easier to replicate as the case gets broken in.