Tenuifolia growing over sides of pot

[OrchidLyn]

I was gifted a maxillaria tenuifolia (no prior experience) and it’s so full I’ve been afraid to repot. But it’s growing over the sides of its pot, and it’s so tight I can hardly feel the soil (or even get a bamboo skewer) in to see whether or how dry/moist it is!
My question is whether to repot, should I use ring support to keep it vertical, type of pot (indoors), and media.