Draw a line from along the bottom of the start of the rally back in Oct 2013 (starting on the bottom of the candlestick below the X in EXANTE and through the bottom of the tiny pink or the green candlestick at the end of Sept last before the big rise) with the recent bounce to $300ish hugging the bottom of the line, i.e. we had broken down below that long-term trend line and thus it has become resistance. We could rise back up to that long-term trend line which is approximately $320ish right now and rising.

If we break significantly above that (e.g. $400), then the bottom is behind us and the long-term trend line becomes support.

Edit: we are now in the negative emotions paradigm below the trend line; whereas since Oct 2013, we had been in the positive emotions paradigm until we broke down through the long-term trend line at the end of 2014 (when oil collapsed). Emotions won't shift that quickly, there will need to be capitulation and some fundamental change in the markets. So the rally now is a trap for those who hope against their purchases > $400.