A little Googling turned up a 1985 newsgroup post on the subject from Kurt Guntheroth, followed by an angry reply from Andrew Klossner (vice chair, ANSI BASIC committee)
It's brief and informal but might help place Guntheroth's position in relation to the committee.
Maybe more useful is this contemporary article in Byte magazine. It covers the process involved with setting up the standard, a summary of positive reactions, a summary of negative reactions and the philosophy behind ANSI BASIC.
PROPOSED ANSI BASIC STANDARD
Byte v.8 no.2 ,pp. 194, 196, 198 - 199 , 1983 , 0360-5280 , McGraw-Hill etc
It's online at: Byte Magazine Volume 08 Number 02 - Standards on the Internet Archive.
archive.org and books.google.com might be fruitful places to search.