I think there's another two types of down-rampers you missed:
1. Bitter - Those that bought on the hype of the specials and were let down/lost money in their short term and are short term investors/day traders who probably sold out, crystallising the loss and their bitterness. They're just ranting and will panic buy back in (or stay away and then whinge more) when it runs upward with any real momentum.
2. Tax - Those that want to push the price down, and then keep it steady or down short term, as they have to sell now to set their tax losses and don't want it to go up whilst they are out of the market. At least these guys will be gone in 3 weeks.
Capn A
MUS Price at posting:
4.1¢ Sentiment: Buy Disclosure: Held