Couldn't the electors just ignore the "split"?
The Colorado amendment would choose the electors by lot from the slate of electors for each candidate. If Bush won 5 EV, then 5 of his 9 elector candidates would be chosen; along with 4 of the 9 Kerry elector candidates.
It is unlikely that the 4 electors in the minority would vote for the opposing presidential candidate.
I'm sure the minority electors could easily be bought off.
Why would they be easier to "buy off" than electors from any other states?
Most people can be bought off. You, me and anyone here could be bought off for the right amount of money.