Thanks for asking mate. Forst and foremost, I am learning. I do not have some magiс potion to cure the wounds of wrong enters. They are not in existance, I guess.
But I will try my best to answer.
"How do you handle the MA crosses when they interwine over a short time?" - I ignore them. I use this projection Mizuho Corporate Bank, Ltd. London Branch --- OR my own view to think if it is a general up or downtrend. And I stick to it. If it happens that, say, I'm going long cause my forecast, but thе price goes down and MA crosses down, I am not rushing to turn my position opposite. I watch. I am very conservative in trading. FX is like a crazy drunken girl. I had a Polish one once You do not have to listen to it, you have to generally grasp the situation - and sooner or later you''ll be "in the zone".
I totally agree with you about programming. Don't think it makes sence. MY SYSTEM IS NOT MECHANICAL. When all my signals say BUY, I never rush to buy. I watch for S/R. I watch for price speed.
Also, if you just do a little bit of history search, you will not be able to find lots of MA crosses going wrong. Take a 30min chart, and find 3 MA crosses within a week. ^)
I don't know if my English is good enough, sorry for that.