Charles H. Spurgeon on Psalms 146:9

The way of the wicked he turneth upside down. He overturns their plans, defeats their schemes; makes their purposes accomplish what they did not intend they should accomplish: The Hebrew word here means to bend, to curve, to make crooked, to distort; then, to overturn, to turn upside down. The same word is applied to the conduct of the wicked, in Ps 119:78: "They dealt perversely with me." The idea here is that the path is not a straight path; that God makes it a crooked way; that they are diverted from their design; that through them he accomplishes purposes which they did not intend; that he prevents their accomplishing their own designs; and that he will make their plans subservient to a higher and better purpose than their own. This is the eleventh reason why those who put their trust in God are happy. It is that God is worthy of confidence and love, because he has all the plans of wicked men entirely under his control. —Albert Barnes.