If you have another 30-06 with a looser chamber, that would be one way to fire them. You can get a case gauge like the Wilson and identify which cases have become long. Otherwise, you are looking at using a bullet puller, as just suggested, to unload them and set the powder aside. You can then remove the decapping pin from your sizing die and resize them without pushing the primer out, and then complete reloading them again.
Generally speaking, neck-sized cases need full-length resizing whenever you feel them starting to get snug. With warm loads, it might be every third firing. With very warm loads on the edge of causing sticky bolt lift, it might be every time, and neck sizing becomes impossible. With very mild loads, they might go a dozen cycles before getting tight. There's no fixed number. This fact has caused most folks to shift to minimal resizing with their dies set up to produce a head-to-shoulder dimension of just a couple of thousandths rather than the full amount. The Redding Competition Shell Holders can help with this, as they have progressively thicker decks that limit how far you resize, and you can start with the tallest and go down in steps until your rounds feed and eject normally.
If you get a case gauge like the Wilson, you can see where the head and neck are sticking out after a single firing. If they exceed the ledges on the gauge, you can use the step-measuring feature of your caliper head to see how far it sticks out. I would make this measurement, in any event, to be able to monitor its growth with each load cycle if you don't plan to adopt the minimal resizing approach.