Post trade analysis:
With the spike (two spikes) higher and close towards the lower end, I should have moved my stop to breakeven. Although structure was not broken (we didn't close below the lower median line parallel), volatility and slop was picking up. I.e., it was starting to get a bit too messy for this 'nice simple trade'.
Hope this helps.
There are times that you say "How in the world did that happen?" According to my dealer, I missed getting stopped out by 1/2 a pip! So placing it correctly makes all the difference (in truth I might have still been 1-2 pips too close to the action).