The message
from "Davy" contains these words:

Unfortunately the sides of the log pile keep collapsing.

Do you mean the ends? I've always included a few flattish bits counter
to the direction of the rest, propped up on one chunk at each end. Seems
to work. Perhaps the rounds were a bit too thin in the first place. Most
stacks are against a wall anyway, often into a corner, so you only need
one end holding up.
If you're on earth you could hammer in a stake.

Like this
http://www.amanita-photolibrary.co.u...ogpile_std.jpg

and this woman certainly knows what she's doing!
http://www.tcm.phy.cam.ac.uk/~mdt26/...odpile_sam.jpg

http://jlhurd.smugmug.com/photos/46465325-M.jpg

Or if you know someone with a welder they could knock you up a set of bookends
http://www.mdeagan.com/pages/writing...s/woodpile.jpg
--
Skipweasel
Pay no attention to that man behind the curtain.