I suppose the easy answer is to stop pushing it backwards. I recently swapped the cable actuated hydraulic brakes on my Genesis to full hydraulic. I've only done a few commute rides in the dry so they are barely bedded in yet. My only issue is they stick when I push the bike back. I had it on the stand today lubing the chain and I could spin the wheel quite freely in reverse but every time I got it on the ground, it jammed again as I pushed it. I'm probably missing something very simple, but at the moment I'm just not getting it.