What is "Yitatzcha"?
Rashi: It is an expression of Nesitzah (destruction). Malbim - he was killed, and the build of his body was destroyed.
What is "Yachtecha"?
Rashi: It is an expression of breaking.
Radak: He will take. This is like "ha'Yachteh Ish Esh b'Cheiko" (Mishlei 6:27).
Radak citing his father: He will burn you. This is like "Gechalim Atah Choteh" (Mishlei 25:22).
What is "v'Yisachacha"?
Rashi: He will uproot you.
Radak: This is destruction, like "Beis Ge'im Yisach Hashem" (Mishlei 15:25).
Why does it say "Yitatzcha me'Ohel"?
Radak: Just like You destroyed families of Kohanim from Ohel Hashem, so Hashem will destroy and uproot you from your tent. No remembrance will remain from you.
Malbim: You will lose your honor. Until now you were among the Sanhedrin, who sit in Ohel Hashem; now your grave will be among Resha'im.
What is "v'Shershecha"?
Rashi: He will uproot all roots from you. Radak - nothing will remain from you or your house.
Why does it say "me'Eretz Chayim"?
Radak #1: All of them will die.
Radak #2: He will be cut off from the world to come.
Malbim: His Neshamah will perish, and be cut off from the higher world of life.
Why does it say "Selah"?
Malbim: This completes the matter.