During the fight with Neji Naruto got wrecked and begged kurama for power and by doing so it reopened his chakra points. If Sakura or Tsunade chakra points get blocked and they release the yin seal chakra will come pouring out the seal , which is the same as kurama chakra pouring out of minatos seal. So yes we can conclude yin seal can reopen chakra points. I hope this clears up any and all misconceptions. 