I agree that the timing was very unfortunate; but, when you trade on a global scale their is not a lot that can be done. I believe the company should make the announcement public as soon as the ink hits the paper. If they would have tried to keep this secret until the market opened on Tuesday it would surely have leaked out and given others a chance to buy the stock at low levels.
Anyway, the bottom line is, a market that runs from 9:30 - 4:00 does not adequately serve investors in a global marketplace. Our markets have not prepared for this and it will be awhile before there is 24 hour (or some similar version) trading.
Also, I have never tried to trade through instinet, but this would have allowed you to buy on Friday (if they trade ADRs?)