I don't think many alts would recover against Bitcoin if this happens and so they will crash even more. Some solid alts with good liquidity like Litecoin may recover but most won't recover in my opinion. Thoughts?

Bitcoin happen to be the crypto currency market mover and if you have that believe then one can say it is only on a very few occasion that some altcoins will be moving in different direction as against bitcoin. Bitcoin market value decline do lead the decline in the market value of altcoins doesn't necessarily mean altcoins will not recover after the downward trend.