Jon,
It was in the last 15" minutes, before the close, that I went short. In situations like this, where the charts are somewhat ambiguous, and moving towards a new signal that has not yet been given, I will switch to a faster chart, such as the 60" chart. This showed a crossover and a sell signal at 2:30 p.m.
I switch back and forth with Flexcharts as well, which I consider to be the most accurate. In the last analysis, it's a judgment call, and I have been wrong in situations like this. This time, I was right.
Currently, we are at support, but there is trend on the DMI. Whatever happens I can't make a decision until market close. That's probably a blessing!
Chico