Lol, and who is going to buy be the buyer?  A large amount of people in Bitcoin have no interest in altcoins, let alone buying altcoins at the top of a bubble.  The pumpers can only pump as long as there are people to dump on.  The current charts show more willing Eth sellers than buyers.  The pumper knows this; he can take a gamble and try to go higher, but it would not be a rational move unless he can short squeeze.  Then he also has to make the calculation there are no shorters willing to out-muscle him.

The game theory to me says going higher would be a dangerous move.  I think it will either slide downwards to break that fib level, or he will try to manipulate it to go sideways to find people to dump on over a more drawn out period of time before May 28th hits and Eth implodes.