Does this oncid need to be repotted?

[butterfly_muse]

Greetings everyone! I purchased an oncidium copper scarab 'brass brethren' and it came in a 4" pot. It's a very nicely sized plant, however when I realized it was more roots than media, I pulled it out and learned that it is pretty well smooshed into its pot. I know that oncidium types prefer this (at least my others do), but I think this is a wee too tight.

Just to be sure, I wanted to ask. Does this guy need to be repotted? If so, how much larger should I go with his new pot?

Thanks!