Dropper loop problems?

[surfisher]

Have a question for those who use the dropper loop. I rarely fish live bait but today I went ahead and tried it. Dropped a mac down and once it hit the bottom I got into a nice fish (I assume good size halibut since I was a bit past the surf zone). Now here is the kicker, I was able to get it close to the yak but he made one last run which ultimately broke the dropper loop where I had my hook. Has anyone ever had this happen or is it time I just re-spool my line haha? I was on 40lb mono.

I attached a photo to show where it had broken.
dropper-lioop.jpg