Yes, and no. You can be on the same page but still disagree with the group. Some would call this immoral; others would call it being a team player.
“The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.” – F. Scott Fitzgerald
However, there comes a time when forced consensus runs its course. Colin Powell resigned from the Bush administration because he was tired of selling lies to the American public about Iraq's nuclear program. Kodak kept selling film despite the plea from its 24 year old employee to start selling the digital camera he created.
Narrow-mindedness is no excuse for continuing to reap the benefits of wrongness. Sometimes decisions are black and white. Agreeing to disagree avoids suffering fools.