Doubt its something happens before the deadline.
Offseason is another matter. I like Vidro and he may well go back to being a gold glove type 2B who hits .300+ every season. its not really fair to judge him on the few games he's played this year and you suspect he won't really be in form until August as this is kinda like just outta spring traing for him now after missing 2 months.
He may also suffer the same fate as Baerga and Alomar and begin to deteriorate rapidly - who knows? Still, he's a quality guy and with nobody in the minors - forget Harris - you would have to get a legit all star type young 2B to replace him (whether in an actual trade for Vidro or acquired another way).