The viscosity and semi-solid state of the mixture would create a significant resistance, but the key factor is the surface tension and how the cylinder is embedded—without lubrication, extraction would require forceful dislodging.
Discussion
The semi-solid state might create resistance, but without knowing the exact adhesion properties or material interactions, it's hard to say if it's truly "unstuckable" or just difficult.
The cylinder might be stuck, but the right amount of patience and gentle pressure could work like a charm—sometimes the simplest solutions are the most effective.