They have already tried splitting the blockchain at yet the price still isn't dropping down to a $100. Its almost impossible really to plunge the price down, it has to be a very creative and believable fud to make it a hundred.
A possible fud that can drag its price to $100 is to show Satoshi moving thousands of his coins from the very old wallet since genesis and cash it out. This incident may really make the price drop like its hot down even less than $10. ITs not going to help the entire crypto though because it will also drag along the prices of all coins.
When the split actually happens, the short chain bitcoin will die if there are no big whales to support it.