The verse is not about allowing to replace, as a woman can do the same by divorcing one husband to marry another man.
It's about the temptation to "take back", what ever money or things a man is supposed to give a wife upon and after marraige, once she is divorced.
As its man's responsibility and he might get tempted to take it back through wrong means. Read the previous verse, its saying when divorcing only if a woman has been engaged in wrong conduct or lewdness, shall one think about taking or keeping whatever she was given. Here Allah SWT is protecting men from such women who marry for the sake of money only. You need to go through a lot of stuff to clear up don't you.:)