Polamalu, Mike Wallace will have to wait for extensions

The Steelers opened the vault over the last month. They paid big money to retain cornerback Ike Taylor and tackle Willie Colon.  They paid even bigger money to give monster extensions to linebackers Lawrence Timmons and Lamarr Woodley.   The vault is now closed. Ed Bouchette of the Pittsburgh Post-Gazette reports Troy Polamalu and Mike…