Extremely stupid (but necessary) question!

I've been feeling very stupid. I am in season 2010 with the Clippers. I have few but good players in my team: Calderon (PG), Afflalo, Adam Morrison, Dwight Howard, A. Stoudemire and a SG I picked in the 2009 draft. I dont really know why, I offered Memphis a trade: their 1st round draft pick in exchange for this rookie I already have. And, again, I dont really know why, I saved the game after offering the trade!! As I advance a few days, Memphis always accepts the trade, and I lose a player I did not want to trade!
So my question is: is there a way to cancel a trade you have already offered? or can someone at least find a way of solving this problem?
Thanks in advance, people

ohhh..that's just stupid...you can do it by editing dbf...that i don't know anything about...or just coninue your dynasty..

ohhh..that's just stupid...you can do it by editing dbf...that i don't know anything about...or just coninue your dynasty..

heheh. I supposed that. Thanks anyway

Normally the only way to effectively cancel a trade is re-load from a point before you made the trade. I find it's a good practice to keep two saved Dynasty files in case you make a mistake (such as accidentally overwriting a save) or would like to explore some trade options and then go with the best one.