From the human flock nine will be sent away,
Separated from control and advice
Their fate will be sealed on departure
K-Th-L make a error; the dead banished
Separated from control and advice -> The ground controllers could do nothing. Contact was lost with the astronauts after the explosion. It is said that they may have survived for a period of time afterwards.
Their fate will be sealed on departure -> Videos show that flame was escaping while the rocket was still on the pad. Their fate was sealed from the instant of departure.
K-Th-L -> ThioKoL - manufacturer of the defective rocket engine. Vowels
are omitted and two consonants transposed.
troupeau -> company, group of animals, flock [related to Eng. "troop"]
mis -> from Latin "missus" pp. of "mittere" - to throw or send [related to Eng. missile]
a' part -> to the side [Eng. "apart" is derived directly]
iugement (jugement) -> from "jugier" (to judge) - a judgement, opinion, or decree [from Latin "jus" right + "dicere" to say/decide]
conseil -> advice, consultation
sort -> fate, fortune [related to Eng. "sortition" (to cast lots, 1597)]
diuise' (divise') -> from "diviser" - discerned; decided; divided (?)
depart -> from "departir" - departure
Kappa, Thita, Lambda - the greek letters K, Th, L
mors -> var. of "mourir" or "mort" - the dead [compare Latin mors, mortis]
bannis -> var. of "banir" - exiled or banished
esgarez -> from "esgarer" - [they] err or make a mistake
email@example.com (alternate: firstname.lastname@example.org)