The correct word is "jettisoned," which means to discard or throw away something that is no longer useful or needed.
In this context, the phrase implies that the team coach was removed or dismissed after the defeat.
Option (1) "jetisoned" is a misspelling with a misplaced letter.
Option (2) "Jctissoned" is not a correct spelling and is clearly an error.
Option (4) "Jettissoned" is a misspelling of the correct word with an extra "s." Conclusion:
"Jettisoned" is the correct term for being dismissed or discarded, especially in the context of someone being removed after a defeat.