Chocolate smelling orchid needs repotting. Still in bloom.

[KatyaB]

Two questions:
1.) The oncidium I just purchased smells like chocolate which I love. The tag says "redolence" but after looking it up online, I'm thinking it might be a Sharry Baby. Does anyone know if those are even two different ones or the same thing...
2.) It needs repotting really badly (it was never repotted from its tiny baby pot but all the roots pushed through and it was just put in a bigger pot. So it has two pots.) Should I do it while it's in bloom? (one spike has almost fully bloomed. the other is still growing) I've heard all sorts of different advice... If I do repot, how should I remove the small pot that the roots are wrapped around without damaging them? Is soaking a good idea? Oncidium roots have proved delecate for me before. How should I keep them from rotting yet keep them well hydrated? What's the best potting medium for oncids?
Sorry for all the questions...