Upon further reflection, I have decided to edit this rule! Apologies for the lack of clarity. 
Previously, the rule was: You should not enter you game into other jams, previously or henceforth.

The rule now states: Game should not have been entered into other jams PREVIOUSLY. 
You are free to enter your game into other jams in the future, should they allow it. 

Once again I apologize for the lack of clarity. If your game was previously disqualified, it has been reinstated.