the only alt I see being able to do that is ethereum. Ripple already had a 50% sell off, BCH seems to be ranging 0.1 - 0.2, ADA is mostly paper money without enough volume to leave it, and the other alts too small.

So question is will ETH sell off to inflate BTC? For me, maybe but not something I'd bet on. eth/btc ATH is 0.15 which is still a long way off. My personal opinion is that eth is better tech and has a more sure future so I wont be betting on that. But it is certainly looking overbought on a lot of metrics.