If you examine the filing you posted .. and look closely... vey closely:
You might see where it states 'Schedule 13G' ... NOT 'Form 4'!
It is a statement of ownership! To my knowledge Vanguard's last trades in RSH stock was a net sale of 32% of their stake at the time (Prior to Sept of 2014). They actually sold 1.3 million shares!
Vanguard Fiduciary Trust Company, as a manager for others
It looks like from the filing, and what I could find about collective investment funds, that Vanguard is reporting on a collection of trust accounts at its company. I expect the trust accounts may be under the control and direction of other people.
The main take away seems to be is that while that shares are on account at a Vanguard subsidiary, the shares are not voted by Vanguard and Vanguard does not have total control on when to sell or buy the shares. I expect that would be up to the trustee of each account.