It would have lived if i left it in drive because......there is only a 2nt gear engage(no timeing or speed of band required) first gear is a clutch, 2nt is first gear clutch and 2nt gear band. IN LOW 1 there is first gear (clutch) applied and reverse band applied(only in low 1) if there was no binding between reverse band and 2nt band, transmission would have lived forever. Manual shift valve body has lasted for over 25 years.
2nt gear Band did not dye from slow or slipping in to 2nt gear, it was the binding of reverse and 2nt bands(one trying to release and the other trying to apply) ...........kind a like bumping the trans brake momentarily while shifting into 2nt. no i don't have a trans brake, but do you get it now?