Hmmm... I think people are giving Idina way too much credit. It is possible she was directed or choreographed that way. And if it was something of her own invention, it's the director's job to decide to keep it or throw it out. The "Idina hands" occurred in Rent only during Over the Moon, in which case it was intentional and funny because it was played honestly (much better than the current version which looks like an SNL skit trying to force the audience to laugh).
Yeah, I know, dissing is "fun", but it also needs to make some sense. It's like trying to diss Chenoweth for bad lyrics.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian