while I'm skeptical about the project (this model, dancer turned Crypto Developer, ICO & Blockchain Expert is just too sketchy, lol) I hesitate to call it a scam. For now, BTC holders on yobit are promised to receive 1:1 coins. Now, even if b2x trades for $0 the minute after, where is the loss for the holder?
It may not be a scam for you, because you've noticed the poor execution of this "fork" and are taking precautions.
You are even glad you will trade. Let me ask you: with whom will you trade? With aliens form outer space? Will it be a scam for the people buying from you, since they'll be parted with their money? You end up ahead, but others shall loose money. Can we call it a scam then, if someone will be scammed?
I fully support your position. Now this is just a HYIP. Any conclusions can be made only after the fork.
By the way, am I right that exact time (when will block 501451) we can check here