It has chosen to steer a middle course between them rather than undertake a strategic review.
"They were doing their strategic review, probably with a lot less bureaucracy," Riedel said.
The company is expected to conclude a lengthy strategic review by the end of the year.
In 2008 it was announced that there were council plans to close the current site as part of a strategic review.
Shell decided to withdraw from the project in May after a strategic review saying it did not meet its financial rates of return.
If taken forward, this proposal would be implemented during the period 2012 - 2022, in line with the scope of the strategic review.
In September 2008, it announced a potential corporate sale as one of its options under a strategic review.
Its normal programming was suspended while a strategic review took place on the station.
In the summer of 2003 a strategic review was published with 54 recommendations.
He introduced three strategic reviews, designed to strengthen his Office.