I bet most big miners and pool operators are fully aware about this possibility, most probably just cannot be bothered, when the alternative is simply to do nothing and shitcoins will just die out on their own.
But if someone does this it would be technically a very interesting event. Pass the popcorn.
It would also be an asshole move. Of course young projects can easily be trampled to death by cyber bullies. That proofs nothing at all about the technical side of SolidCoin. Even if one day a clearly superior alternative to Bitcoin emerges (and I don't believe SolidCoin to be that), then this SuperiorCoin will most likely go through the same vulnerable phase and it would be a disservice to the progress of crypto-currencies to take advantage of this vulnerability and kill it off early.
I disagree with you.
Why? Because SolidCoin pretends to be like Bitcoin (digital money), while in fact it is apparently quite unsecure caused by the lack of a huge mining network.
Bitcoin is the reason why we have all this hashing power - bitcoin mining and the bitcoin network grew side by side.
You cannot try to repeat history, and then blame the environment for not being the same as years ago.
So either the SolidCoin fans take their network private, of the have to face the real world.
The good thing about some Vladimir disrupting their network would be that the copycats learn that they have to do more than change 10 lines of code to start a successful digital money network. And that could eventually lead to some competitor.
If you think, like me, that SolidCoin does not bring enough advantages over Bitcoin to be a serious competitor, then just let them alone and run their course. I don't see it cause much harm. It even provides a nice field test for some of the alternative approaches, like the new difficulty adjustment algorithm. If this turns out to be a worthwhile change, it could be even adopted for Bitcoin in the future, starting from some checkpoint block number, and we would already have a better understanding how that would play out.
But look at the world. There are a few exchanges already accepting solidcoins for USD/BTC. I am pretty sure they are not aware of those risks, as they believe solidcoin is as safe as bitcoin - which it is not.