Just a small worm inside?

This corkscrew structure called dinocochlea ingens was found in 1921 in the Wealden area of Sussex in England during the construction of a road and was originally or for a long time regarded as a petrified gastropod shell. Here a "model" (where is the original?) of Dinocochlea with the scientist Paul Taylor as a benchmark (Source: Wikimedia, PaulDTaylor, >>Picture link).

Dinocochlea ingens is now considered a trace fossil in the Natural History Museum of London. What does this "model" really stand for? It is a symmetrical spiral several meters long, which until 2009 bore all possible designations and was then classified as a construction of a giant worm. Trace fossils provide an activity profile of a prehistoric creature, as "petrified behaviour", so to speak. Who or what is really behind it - but here science can only speculate, because allegedly no evidence of body fossils or fossilised excrements was found.
Science seriously assumes that dinocochlea was the result of a nematode with a body only a few mm in diameter (>> Source). Could such a thing have created such a form? That theory seems to me to have the worm in it … ;-)

We have seen something similar >> here before.