No it wasn't. "Open Standard" was coined and defined precisely to indicate an affinity with "Open Source"

If you read the ITU reaction to the attempt to define "Open Standards" this is obvious.

http://en.wikipedia.org/wiki/Open_standard#ITU-T_definition

Any limited use of "open standard" before that point was as meaningful as someone referring to "free software" or "open source" before those terms were defined.

Sorry, but that's wildly anachronistic too. The term "open standard" was in widespread use long before "open source" was coined in 1998, and certainly before the ITU-T definition in 2005: http://ngrams.googlelabs.com/graph?content=open+standard&...

A term does not need to have a formal definition in order to have a meaning.

Open standard had a very distinct and widely used definition well before the term "open source" was invented.