 Why did the captain try to change course away from Jorgenon's Worlds?
"It is rather unusual," Magnan said, "to assign an officer of your rank to courier duty, but this is an unusual mission." "Two double planets, all rather close to an unimportant star listed as DRI-G 33987. They're called Jorgensen's Worlds, and in themselves are of no importance whatever. Since they've met no opposition so far in their infiltration of Terrestrial space, they intend to seize Jorgensen's Worlds by force." Magnan leaned back, waiting for Retief's reaction. Unfortunately, Jorgensen's Worlds are technologically undeveloped areas. "If it's trapped for destruction, I suppose—" "I've heard of these Jorgensen's Worlds," Retief said. Overall policy calls for a defense of these backwater worlds. "You'll be traveling with Class X credentials," Magnan snapped. II Retief put down the heavy travel-battered suitcase and leaned on the counter, studying the schedules chalked on the board under the legend "ALDO CERISE—INTERPLANETARY." You'll have to try to get space on the Four-Planet Line ship next—" "Which gate?" "But—" Retief picked up his suitcase and walked away toward the glare sign reading To Gates 16-30 . He picked up his bag, stepped over the man and went up the gangway into the ship. "Which way to cabin fifty-seven, son?" Retief asked. They maneuvered it through the door, lowered it, glanced at Retief and went out.
 Retief killed Skaw, and it angered Mr. Tony, who ordered him to change course.
 Jorgenson's World doesn't have enough trade value to warrant the trip.  Retief killed Skaw, and it angered Mr. Tony, who ordered him to change course.  He needs to get away from the Soettie after Skaw's death.  He wants to drop Retief off at Alabaster instead.