Salaries never stay secrets forever. Hiding them only delays the inevitable. Last year we were having a discussion at lunch. Coworker was building a new house, and when it came to the numbers it was let loose that it was going to cost about $700K. This didn't seem like much, except to a young guy that joined the previous year and had done nothing but kick ass and take names. The new guy was arguably the most talented…
Can someone please shed some light on what would be a good strategy to follow if you were in his position talking to HR, manager, CTO? What's the best way to save yourself once you've realized you're worth nearly double, triple, or quad your current comp pkg?
Keep in mind that this happens all the time and is standard procedure in most American and European companies. As long as you act honestly, your boss will probably not hate your forever or start looking for your replacement. If your employer can't deal with negotiating over salary, you should probably just take that other offer . . .
The other option is to say that you're going to leave to go consulting. This is a harder sell because they'll think you're bluffing. You have to be ready to actually do it.