How to go about dividing reed stem epidendrums?

[Ordphien]

I smelled something simply amazing thus mourning when I stepped outside.
I spent about an hour walking up and down my street locating it.
Turns out it was a giant mound of freesias.
Anyway... that, in turn led me to another yard which I've always greatly admired.
And I noticed today that the whole left bank of a wall of reed stem epidendrums!
The cheapest I've seen an epidendrum on my area was $35 which was to rich for my taste.
I asked and got a "go for it" and "just don't destroy them".

What would be the best way to get some plants from these mounds?
These are about 2 feet taller than me and I didn't see and keikis.

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