The initial conditions of the thought experiment is (very) LEO / reentry. capsules, space shuttle and other spacecraft can generate lift in upper atmosphere during reentry, in order to reduce deceleration maximum G force loading and maximum heating.
Since capsules and space shuttle are not the best lift producing devices ever made, what would happen if we try to deorbit a hypothetical heat resistant/unbreakable high lift-to-weight ratio (let's say) Nimbus4 glider?
Subsidiaries: At which (maximum) altitude & speed would the variometer tell 0 m/s vertical speed? What would be max temperature reached? Have there ever been real tests of deorbiting high finesse / low wing loaded gliding devices? What would angle of attack be during the whole descent, until subsonic speed? How does Coanda effect work at hypersonic speeds?
Illustrations found here: https://www.quora.com/In-regards-to-atmospheric-reentry-what-exactly-is-a-ballistic-reentry
Nimbus 4, google images