Hi Raffster,
First, I want to thank you for being a client of FXCM.
Having both long and short positions in the same currency pair at the same time is called hedging. It's important to understand that FXCM does not prohibit traders from hedging. However, hedging is prohibited by CFTC regulations. That means, if you trade through FXCM US or any other US-regulated entity, then you will not be able to hedge on your trading account.
Your forum profile does not mention where you live, but if you live outside the US, then you can trade through one of our other entities worldwide. FXCM is one of the only retail forex brokers in the world that is regulated on four continents. For example, you could trade though FXCM Australia which is regulated by ASIC. Here's a link to an FXCM Australia practice account which will allow you to hedge:
http://bit.ly/17LlFA6
If you live outside the US would like to transfer your FXCM US account to FXCM Australia in order to hedge or trade CFDs, please let me know.
Thanks,
Jason