Martlet: Some radio communications aren't even coded. However, the article said they intercepted A10 transmissions.
While anything is possible, I highly doubt it.
May be they did not. Most likely they saw from their satellites the A-10s taking off, flying over unidentified dusty column, some transmission emitting from those A-10s, US artillery commencing firing shortly after and that column being blown to pieces, possibly followed by panicked radio calls from that same column in the open and plain english "We are being blowen the s#$t out of, where the heck is the supression and support, you REMFs!".
That's how things usually happen in wartime and then some journalist writes how intelligence "read" the transmissions, etc. That is probably how it must have happened if that happened at all.
Which, while regrettable, would not be out of the ordinary in any conflict to raise unbelief. After all, there are quite a few confirmed cases of friendly fire even in this conflict.
miko