I still haven't heard from anyone on the examples I cited:
A WR catches a pass facing a QB, gets hit immediately from behind, they hit the ground, the ball pops out, no catch. Same situation but the defender holds up the runner, tries to strip the ball out, isn't successful, then just completes the tackle and the ball pops when hitting the ground again. In the second case, the official has to judge whether the WR had time enough to make a football move as the defender held him up (2014). In 2015, the official can deem him clearly a runner because he was held and prevented from making a football move. It is STILL a time determination the same as it was in 2014.