I'm not familiar with zone 9 or CA, but around here if you're getting new damage now it's Apple Maggot. I haven't caught a codling moth in my traps since I put them out in mid-summer.
A good way to get an idea of what is going on in your local area is to contact your county extension office. CA could have insects I'm not aware of.
You should also use some kind of traps so you have an idea of what is hitting your trees at different times of year.

Cut one open. Codling moth larvae are large and go straight for the seeds. Apple maggot are small and wander around aimlessly.

If it's codling moth they're already in there and doing the damage (according to my area, you could easily have more generations) and picking or bagging won't do you any good.
Judging from what I'm catching in my traps bagging this late would keep away some apple maggot damage.
Bagging is putting a bag on the fruit while it's still on the tree and letting it grow inside that bag.

I don't know what kind of pear they were but my neighbor had a red pear that you were supposed to pick early (but red) and let finish off the tree.

I think a pear needs to be picked at the proper time. If too early or too late they ripen improperly. I'm not sure taking one early is a good idea.