Well, had no option but to bet part of my stash on it. Maybe I've been too complacent over the threat to Bitcoin from BU.

It's definitely scary to do that right now, I had the option to pick up some more ETH early today when BTC was still above $1200 but decided for a more stable investment (basically turned it to fiat). It's called taking profits from Bitcoin too, this was another peak and I doubt we'll see it again in the next months.
I hope Bitcoin get it together eventually (honestly I don't know how for the reasons I mentioned many times in this thread). You used the word complacency and that's exactly what happened in Bitcoin lately. Today I've read that Google was the 21 search engine in history. The self fulfilling prophecy that Bitcoin is Myspace can become a reality if this trend continues.