What to do with new oncidium from the grocery store

[phalbear]

My mom just helped me buy what I think is an oncidium from the grocery store. I've left it in it's plastic sleeve as I'm not sure what to do with it.
The plant has just one pseudobulb with a few leaves. The pseudobulb is a little bit brown (sunburn?), and the leaves have a bit of colour variation with a slightly lighter green colour at the base.
Leaves have slight splitting and spotting, and they are a bit thin.
I don't know if I should take it out of the sleeve and examine the roots/repot, or hold off on it as I've heard conflicting information.
The medium seems to be a bark on the finer side, and an orchid I've had from that brand came with sphagnum moss.
I've only ever kept phals which I have a few of, so I'm also scared that the new orchid may have a pathogen and spread it to them (due to the spotting).
In short, should I take the orchid out and examine the roots and repot? Or should I just enjoy the blooms and let them fall and then repot?