you are right... I couldn't have guessed that was the idea, I should have figured... so it's nothing close to be a sentimental issue, Pop is trying to get Parker going because you like it or not, Cory starting PG in POs would be a very bad news for the Spurs...
Now if by POs time it's the best option to have Parker as third PG I have no doubt in my mind that Pop will do it. So yes Pop is willing to do that in April and in POs if Parker plays that bad... Pop has never been sentimentalist with these players.. not sure why you are thinking he will be now