Quote from tom123:
I would call that manipulation/intervention.
which tells me the whole forex trading game is a rigged game. rigged by the elite banker controllers...and... rigged by the bucketshop brokers, like Oanda.
How can we win.
You are not quite right. There are no such things as "natural moves" or every move is "natural". Every move is an effect of a sum of decisions. The fact is sometimes a single person with enormous capital and in specific moments can cause an unstable state to crush. Forex is the most difficult market to play. Why?
Because the biggest capital is in the hands of a relatively small and very well trained group of people. The foreign exchange market is the most chaotic and unpredictible in the shorter timeframe, because individual investors, who add up to the trends on shares and indexes have literally no meaning. So the game here is between the biggest fishes, sharks and whales (i know, they're not fish!

). if You wan't to win. You have to work hard, very hard to learn how to profit regurarly in longer time frame or how to scalp in the shorter. Indexes like SP500, DJ, DAX, NASDAQ are muchj more predictible, as the trends last a little bit longer.
In my opinion there was nothing unpredictible in the move mentioned by You. The EUR/USD pair was nearly overbought in 1hour timeframe, the 4h timframe stopped on the 50% reaction level 8 hours earlier. Daily trends were still the rulers. In such conditions a little push to the downside was probable, as it was meant to cause further fall allowing the sharks to: either get out of the shorts and wait, either wait for the level 1,4387 to realize their profits and switch from USD to another currency. The point 4760 was a very safe point to go short, as it was exacty at the flat tops from 3 hours earlier. And many comparably smaller fishes added to the positions there, as well as some sharks, probably. This caused the subsequent fall down.
ABOUT OANDA: I have to agree - I also think that the whole platform is programmed against the retail trader. Sum up the pros and cons and if it does not fit Your style, choose another broker without delay.