For the record, during the last spam tests/attack, btc prices when up.
There hasn't been a spam attack like this in the past and it forces down the price for obvious reasons.
What do you mean that there hasn't been a spam attack like this? The last spam attack was sending dust to the brainwallet for cat which people were trying to claim. The attack before it was pretty bad. I'm fairly certain that all three of these attacks are run by the same people.