Rewriting history of an account can only be done by the account owner themself, representatives can't do this.
So, I send 100 BTC to you, wait for you to sign it to receive it. Then I purchase historical stake, and produce a historical fork where I send the same funds to another account I control, which signs it, then I use my historical voting power to vote on my fork, and viola?
How does this convince the network to evict the original block?. From their perspective your historical stake is currently worth 0.