Plenty of people sharing the name, but the Steve Austin we have in mind is chair of the geology department at the Institute for Creation Research, which describes itself as the “leader in scientific research from a biblical perspective, conducting innovative laboratory and field research in the major disciplines of science,” a.k.a. “Jesus geology” (“Innovative” means that they count the Bible as evidence and, apparently, little else, which is, come to think of it, not particularly innovative). Austin has been an active promoter of a Noah's Flood interpretation of the geology of the Grand Canyon, and has presented various posters in various venues, including the Geological Society of America in 2012.
As a creationist, Austin is no stranger to subterfuge, as illustrated by the attempt to score points by him and fellow creationists (Marcus Ross, Tim Clarey, John Whitmore, and Bill Hoesch) at this 2011 Geological Society of America arrangement; Austin introduced himself as a geologic consultant, without a word on his background. And that’s not his only attempt at this kind of deceptive ploy, as shown by this one. Indeed, even his “research” is permeated by claims that must be judged incredibly and obviously dishonest rather than just erroneous, as pointed out here.
Diagnosis: Austin’s affinity for reinterpreting honesty could even suggest a fraud, but his aptitude for cognitive dissonance is hardly in doubt either, so the verdict is “addle-brained nincompoop”.