At the AGM this year, Dale talked about the options plan which was subject to a vote of approval.
He stated that San's percent (I don't remember the number) was not large within industry numbers. Also he said it was a necesssary to attract and/or retain employees - it was not about dilution.
The statement was supported by a comment from C Shearer (I believe) that this was all within accepted industry practices so this announcement should not be taken negatively.