What is the meaning of "Yachilu"?
Rashi #1: They will succeed. This is like "Al Ken Lo Yachil Tuvo" (Iyov 20:21).
Rashi #2: This is [will take effect,] like "Yachulu Al Rosh Yo'av" (Shmuel II, 3:29).
Radak: This is [trembling,] like "Chil ka'Yoledah" (48:7). The Rasha's evil ways make the poor tremble.
Malbim: He succeeds supernaturally - in all ways and at all times ("b'Chol Es"). Natural success is only in the way prepared for success based on nature, and at a good time, but not at a bad time.
Why does it say "b'Chol Es"?
Radak: As long as he is in the world, they fear him.
Why did he say "Marom Mishpatecha mi'Negdo"?
Rashi: Judgments of Your afflictions and punishments are removed and distanced from him; they do not come upon him.
Radak: "Marom" calls out to Hashem. You, Hashem Marom, Your Mishpatim are opposite him, and do not reach him, therefore he is haughty!
Malbim: Also when You do Mishpat in the world, and evil comes via Hashgachah, like plague and famine, they do not affect him.
Who are "Kol Tzorerav"?
Radak: They are the poor.
What is the meaning of "Yafi'ach Bahem"?
Rashi: He blows wind at them, and they fall.
Radak #1: They are like a breath of the mouth in front of him.
Radak #2: Yafi'ach is an expression of Pach (trap); he sets a trap for them to catch them. The same applies to "Yafichu Kiryah" (Mishlei 29:8).
Malbim: He 'blows' Your afflictions on those he torments, that they will take effect on them, and not on himself.