Hi, BlueBowers
Welcome to the forum!
I walked the Aragones this past July and went from Puente La Reina to Pamplona by bus. There is a bus around 2:30 or so and it's a very quick trip. If you were going to walk to the Alto del Perdon, of course, you would turn right at Obanos and not go into Puente la Reina. It should be easy to "walk backwards" at this point on the camino since there will be so many people walking towards you that you will always know which way to go! Buen camino, Laurie
p.s. I don't know if they've straightened out the opening times of Eunate, but when we passed through we were very disappointed to see that the church didn't open till afternoon. In Puente la REina, the woman in the tourist office was very apologetic but let us know very clearly that it was not the government's doing -- it was the church that was in charge and had restricted visiting times.