Great job on the training!
I wouldn't be surprised if it is a 'nanner but it's too late for it to screw up your crop. That seeds you started with was most likely born of a 'nanner so stands to reason the plant would throw some too.
Your trichs look like mostly cloudy so it's not likely to produce a lot more bud or trichs so I'd take it down any time now. I usually start cropping when they're 50:50 clear and cloudy. They can go amber as they cure in the jars or it's wait another 4 weeks for amber under an expensive to run light. Even then I'd be lucky to get 10% amber on the plants.
Did you get cuttings from that plant just in case that bagseed was the 'ONE" ? I've missed a few really good ones over the years by not having backups.
Have a great harvest!