These type of false spikes occurs sometimes on various platforms sometimes by accident and sometimes I believe brokers are trying to cash in on unwary traders.
This happened to me on Oanda where I complained immediately. They said it was an error and thankfully they restored my trade which was a winner in this case.
I would advise you to contact them promptly as there is no way they can say that it was a geniune price especially if you can show that other major feeds were no where near the spiked price.
This looks like an error to me on their part. Faulty platform or operator error.