SaReGaMaPa Memory

Does anyone remember two contestants from the prelim round?

One of the contestants argued something (I barely understood what was going on) and during the thumbs up-thumbs down round, Jatin gave him a thumbs up and then instantly gave a thumbs down. Does anyone remember who was this and why that happened?

The second contestant was aired on the same day Rajeev was participating (the day he forgot the song) and was crying "please give me another chance." I didn't see his performance though. Can anyone describe it?