“Is he talking about the spike protein that is made for a few hours after vaccination and then destroyed within a few days?”
“a study published in Cell, a highly esteemed journal, found that the mRNA genetic material and spike protein persist in the lymph nodes of individuals who got the mRNA vaccine for up to two months.”
https://medium.com/microbial-instincts/mrna-vaccine-stays-active-in-the-body-longer-than-expected-new-data-shows-but-it-isnt-harmful-aaa40544bc06
Lymph nodes are the where the spikes are supposed to end up. In people with normal immune systems the spikes won't last that long. In people with weak or abnormal immune systems the spikes will last longer. Same reason why such people take a long time to recover from a cold or flu.