That's a fresh one on me......like Pompey or Caesar settling their legionaries, only instead of getting arable land in Campagna or the Po Valley (Torino, Italy was founded as Augusta Taurinorum -- Augustus's "city of the Taurini", a legion that he settled there on disbandment), they get the door -- a bum's rush down to Panama, followed by muster-out, some tools, some back pay, and their hats. "Been nice working with you, guys, have a nice life!"
Could be that John Wilkes Booth was heaven-sent to rescue Lincoln's rep, what do you think?
Though it was no doubt unintended on Booth's part, in those regards he did indeed put a halt to Lincoln's colonization schemes. The colonization office over in the interior department was shut down in a 180 degree policy reversal a few months after Lincoln died (and quite literally at that - a dispute was waging over whether the office had been funded to continue by Congress with several of Lincoln's top advisors and his old AG Bates arguing for him that it should be kept open. After Lincoln died the new AG Speed reversed course and it shut down).
Sickles returned home shortly after getting a letter about the assassination and nothing more came of his trip.