The Spike Protein that comes into the body through the Jab is enclosed in a lipid nanoparticle. This nanoparticle is formulated to fuse to certain cell membranes—not the ACE-II receptor. Their design controls where they act, how long they circulate in the body, and where and when their contents are released. Once it drops its payload, the spike protein RNA is ran through the ribosomes to be presented in the DNA form on the cell membrane to attract immune cells. The host cell is then destroyed along with the Spike Protein.
Your idealized description does not happen in the real world. The lipid carrier is observed in all organs of the body within 15 minutes of injection. The engineered mRNA uses redundant codons with GC substitutes for the wildcard positions. This causes more aggressive synthesis on the ribosomes. There are two prolines inserted on the engineered spike protein that prevent the geometry snap to cell fusion after attachment to ACE2. The consequence is significantly more antigenic surface exposure. The spike proteins appear in the brain having been generated after the lipid envelope permitted passing the blood-brain barrier. The S1 subunit is easily cleaved and misfolds into a prion. It’s a $#!+ show writ large with millions of victims.
The host cell is destroyed, but the spike protein is found free-floating in the blood, (on the order of 1 billion spike proteins per millileter of blood, according to the Harvard experiment), for ...we don't know absolutely. And we don't know if the immune system destroys them, or if the loose spike proteins attack ACE2 receptors, resulting in the side effects seen and (possibly) yet-to-be-seen.
What's fun is you pro-jab trolls are always two steps behind the current science.