Pulling up thread too fast

Frequently enough, when I pulled up my thread after stitching a row (or section) something would catch and prevent the longarm from moving. I'd usually need to pull out the bobbin and/or break the thread to get the machine to move. This time when I pulled out the bobbin had a better idea of what has been happening.

I've got a darker thread on the top, and in the picture you see a length knotted around the bobbin thread. It was cut at the top so I could even remove the bobbin.

Look again at the light blue bobbin thread. It comes out of the tension hole, you see the darker top thread knotted, but then you can see that the thread has found its way up, around, and under the bobbin case latch. During the stitch cycle, the thread did not get around the case but did manage to catch the tip of the latch and slip under it.

Ok, got the what. How? Why?

My working hypothesis, and it's holding out so far, is that in the process of pushing the machine away/grabbing the thread/bringing back to the starting point/needle down/needle up/grabbing the thread/pushing away/cutting I was pushing away before the down/up was completed. It seems pushing away when the needle isn't totally up will drag the thread across my bobbin case latch.

Solution? I'm slowing down. Making sure the needle is all the way back up before pushing the machine away to grab and cut.

So far, so good!