The fact that the sponsorship amount is confidential in itself should be an indication that it is not a measley amount. Not like taking an ad out in the local magazine. If people want to sell off because there are no figures, then they clearly cannot see the bigger picture.
Big transactions showing up. Based on time of transaction, they would appear to be all sells. So what caused the sudden push upwards? PI sentiment? If so, it will crash again tomorrow. If not.... fingers crossed.