Sipunculid but tenticles too long?

[Elliott Comans]

Saw this critter in the filth of the sump. It seems to have ling feeder tenticles but also a swirling mass of tenticles (mouth?) . If the video works you can see it clearly when I zoom in. Couldn't see a body.
Any help would be appreciated, I'm super interred in what this could be. First thought a species of sipunculids but tenticles seem too long. I know cucumbers can gave long feeders but they look the slime not defined tenticles like these

 

[lapin]

https://www.reef2reef.com/threads/sipunculid-but-tenticles-too-long.851756/Answers are posted in the above thread
2x posted