Sure he was. Idol's out to make stars (and make money from those stars). Lambert's already sold himself as an artist and will have a career after this. Matt Gerard was on the cuff but needed just a little more time to shine on the show to help get a career started. He may have never had a shot at winning but he's now at a point to where if he comes out with an album, people know who he is and he might be able to do a little better than before. It was a good buisness move. Besides, the judges can't use the save when they're up to the top 5, which they are now. So the only other person they would have used it on was either Anoop or Lil, and while I liked Annop, I felt Gerard deserved to be there more.
As for Lambert, guy's amazing. My favorate performance so far has been "Mad World". I'd never heard of the song before but he made me instantly love it. I now have it in my phone by him and another guy as well and it's entered number 10 on my top 10 songs (yes, I keep an actual list).