RSI level for Yamana is close to the same level back on April 17th. The resulting move garnered a 10% gain in 6 days. I would consider the trade a bust if yesterday's lows are taken out. (25 cent per risk to the downside).
While I tend to agree with you, I wouldn't be surprised if this heads towards $8. The psychological aspect associated with a double-digit share price now comes into play. If this can't get back up to $10 soon, then expect this to bounce around till the next leg down. But otherwise, you did get in at a good price.