Are you sure that what you're seeing on your Arbor vitae are galls? They aren't supposed to be a host for the galls that cause CAR. Eastern red cedar are the only ones I know of that host those. Junipers and leland cypress are also safe. But none of the trees you or I mention are deciduous, rather coniferous.

I'll take another close up picture today, but it looks like its got 2 needles coming out of each hole. I'll put a ruler on the needles too. I have so many I don't know how I can pot them all. Right now each of them was dug out with a pretty big root ball because the soil is still nice and wet. What am I going to do with all these??? And where to plant them???? I have a pretty big wet area (sometimes wet in spring and fall), maybe I could put them there.

Virginia Master Gardener here. I tend to shy away from the manicured look in favor of a more natural and diverse looking landscape. Back in Virginia, I nurtured these kinds of seedlings for 40 years. The vast majority have been eastern red cedar. If you know what they grow up to be, then by all means nurture them and transplant them to a suitable location, which would be full sun, well drained, and lots of room to spread. I nurtured one in a pot for a few seasons, then transplanted it to it's final location where it still stands today (20 feet or so tall) and is part of a diverse visual screen for my corner property in Virginia. Did the same with a few others that I donated to the local community pool for a visual screen. Again, they still stand, and have filled out nicely. I've done the same with American Holly volunteers. Incidentally, hollies are incredibly resilient, and transplant and prune very well. Holly berries are very attractive, and are a great food source for many bird species. I recently moved to Colorado, and have started "saving" cedar and pine seedlings in a similar way. Besides being fun, it's a very economical way to fill in your landscape.

I am aware that 4 planted together need to be split up and are hearty outdoor worthy, (can I leave them in a sheltered area till spring?) ===>>> big city name please .... leaving them in a pot... for winter.. is so problematic.. that many peeps with many years of experience... can fail at it ... depending where you are ... the norfolk has to stay indoors... if you have a forced air furnace .... in other words.. depending where you are .... try to place it away from the constant dry air coming from the furnace .... probably the same for the olive .... winter watering is also tricky .... with the sun in decline.. most plants are in slow motion.. even indoors... so try to let them near dry in between waterings ... and do not fert a plant that is in slow motion ... ken