I'll use the Catholic way to answer that. Scripture doesn't say he died a second time. Maybe he was assumed.
maybe...but the statement I questioned had to do with the man can only die once statement...how about Matthew's description of the aftermath of he crucifixion where graves were opened, many bodies arose...bodies, after they rose went into the holy city where they were seen by many.
Perhaps, just so these guys wouldn't have to die again, they ascended/were assumed....who knows