Firstly, gyroscopic and centrifugal forces are completely different things so it's not correct to say 'gyroscopic or "centrifugal" force'.

Also, if you don't mind me quoting from the paper you linked:
"a falling bicycle can be saved by proper steering of the front wheel. The theory explains, for example, that the ridability of the bicycle depends crucially on the freedom of the front forks to swivel (if they are locked, even dead ahead, the bicycle cannot be ridden), that the faster a bicycle moves, the easier it is to ride (because a smaller steering adjustment is needed to create the centrifugal correction)"
It entirely agrees with me and is actually cited in the paper I linked to (though, I'll accept that you might not be able to see that because it's behind a password). The significance of Dr. Jones' paper you cited is that he showed how the angle of the front fork uses a form of mechanical feedback to apply centrifugal forces to the bike and keep it stable. It is the very phenomenon I had in mind when I wrote "Let me know if you understand that and if you do I'll tell you some more" in my first post. I didn't mention it because I thought introducing it into a discussion on high school physics would be confusing and also because it first requires one to understand the role centrifugal forces play in keeping a bike from falling over.