Eunicid Worm remove or....

[24storm]

So last night i was looking arond in my tank with a red flashlight and seen what i am sure is a Eunicid worm pretty creepy looking lol. It was pretty large i could see a foot of it.

I have a PVC structure for my rock work and that is where its burrow is i could trace back to where its tail was so i have no idea how large it really is.

So my question is do i tear down the tank to remove it. Or do i cap off the 2 entrances to the PVC so it becomes trapped and dies (will this be an issue) I have approx 350 gallons of water volume.Or do i just leave it alone?

I do not really want to tear the tank down it would be a huge pain in the you know what. If i trap it so it dies would this cause a tank crash? I am thinking it would just starve and slowly wither away. And if i leave it will this become a bigger issue down the road.

My tank has been set up for more then 3 years and i dont think this thing has been an issue sure i have lost some fish but i am sure that has happened to most with tanks this large. I read lots of people have lost zoas and rics and i can say almost all my zoas are gone so it could be this thing.

Any input would be great trying to make up my mind on what to do. Now that i know its in there i am not sure what to think lol.