LOng spined Urchin??

[coralreefnfish]

HI I have recently started a new tank we have had it for about three months. we have several corals including a leather, Zoos, candycanes, birds nest, mushrooms and montipora. just wondering if the spines on the urchin are going to harm or kill are corals as he stomps all over them lol. are fish also tend to swim into him while there sleeping. is this a problem or am I just worrying to much.