"I don't understand your point. Rambus couldn't create treasury shares just through a four for one split."
Authorized not issued shares were increased by a factor of 10, issued shares were given a 4:1 split. So the company got 10 times as many shares and only gave out 40% to the current stockholders. The part that I didn't understand was how enthused most of the stockholders were to get 4 times the shares while giving the company 10 times the shares to play with (options and grants).
"If the split had not been voted for, they would not have all these shares to play with, and would have to buy them to give them away which of course would increase demand and make the value of your shares higher."
I don't understand your point. Rambus couldn't create treasury shares just through a four for one split. All they could do is increase the treasury shares already there. If they hadn't split, then management would indeed have been issued fewer shares (1/4 probably) but each option would have been four times as valuable, for the same net effect.
As for buying back shares, they have to do that now. Issuing stock options increases the outstanding shares, diluting the value of the stocks. To reverse the dilution, Rambus has to buy back shares. That's why Rambus regularly announces stock buy backs.