By Bi-partisan they mean rubber stamp what President Obama wants. Republicans went against the stimulus plan because it goes against the core principles conservatives stand for,and because itsn't going to work.
A democratic majority does not by any stretch mean that the republicans have to adopt their platform, but the republican policies on the hill since november have been obstructionist despite overtures from the white house beyond the requirements of standard politics. In such a time of crisis, it is hard to justify this. The republican reaction to becoming a minority in government seems to have been to put up a fight anywhere and everywhere, and to hope that things stay bad in time for the midterms. This may or may not be sound politics, but it certainly is a polar opposite to the democrat's actions.