good question. does anyone know if a 12ft. green giant that was uprooted and leaning is worth re-staking off. will it take hold again? same situation

I would definitely try. It's important to act quickly. Best to use a tree anchor type stake kit. I also use 6' heavy rebar and HORTtie. The advantage to the tree stake kit is that the tree anchor can be left in place for future use. What i mean is that after the tree roots reconnect you can detach the stake but leave the anchor in place, then reconnect during the next bad storm to prevent a repeat.

I've had success re-staking trees. However, if the green giants got blown over because of girdling roots, the basic problem is not solved.

with me I'm pretty sure its not the roots. some areas stay fairly wet this time of year due to no real sun strength yet and I am close to wetlands. Now combine that with a Nor-easter with 5 inches of rain and 70-80mph gusts on a 24 hour storm it was just too much. some parts of the yard were like a river. even little 4ft. green giants tipped over some. crazy storm. The Norways all seem fine. Lost a fat albert that I planted 12 years ago. so bummed.