My horse is pawing and won't stand still while tied out of what seems like nowhere! She never acted like this until a few days ago. I need help!

I own a horse named Remi, and I've had for about 4-6 months. When we first bought her she was perfectly behaved when it came to groundwork and being handled. She stood completely still while tied and never ever pawed.

A few days ago we moved to a different barn and ever since, Remi's just will not stand still. She moves all around. She also paws a lot. I am so confused as to how this happened because, before, on the very rare occasion that Remi did do something pushy, we corrected her immediately and she stopped. We never went on a long break from handling her, and she has been handled almost daily by only 2-3 different people, one of whom is a very experienced trainer.

Ever since we've moved to the new barn, the only way I can get Remi to stop pawing and moving around is to fling my hands in her face, (I AM NOT HITTING HER WHEN I DO THIS) which, when done enough times, made her stop for several minutes, but once I left to do something else she started again.

She has never ever acted like this before until just a few days ago. I thought it could be that the behavior could be a result of stress from moving barns, but when we've moved before she never acted like this. It's not an issue with excess energy due to lack of turnout, since at the current place she's getting even more turnout than before.

Does anyone know what could be causing this behavior and how I can correct it (without hitting her)? If so please let me know!