Where did you ever hear of this? Certainly not the Bible or SOP. You are professing that God removes free will from those sealed. That my friend is false doctrine. You can believe that, yet you can’t believe that God can overcome sin in those who are living in the final moments of Earth’s history?
Certainly we do. Those in heaven will have seen the horrendous nature of sin and would never opt to rebel again. That is the point of probation now… to bear witness to heavenly beings that humans are fit to be in heaven and that rebellion will never arise again. SOP is clear on this.