Bristleworm eating coral?

[Joe Varghese]

We have a mushroom coral that basically floats around the bottom of
the tank ... I tried unsuccessfully to get it to cling to a rock, and
it usually ends up in a nice location so I left it alone.

For the 2nd time this past week, we found our large bristleworm (~4")
on the coral, and it really looked like it was eating it .... is this
normal behavior? My temptation was to just take the worm out, but I've
read all the positive articles about these worms from folks I trust
.....

Advice would be appreciated.

Thanks!