Is one excused for being ignorant of the understanding of the verses regarding the blowing of the spirit into Adam, and is that considered apostasy that nullifies marriage and invalidates good deeds?

What has been mentioned does not lead to apostasy, nor is there a need to renew the marriage contract. Rather, it is merely whisperings [waswas] that should be ignored. To get rid of these whisperings, it is recommended to seek Allah's help, sincerely turn to Him, and supplicate frequently.