Would an extension be breaching the WA in a very specific and limited way?

I only ask because if I had decided to arrogantly and stupidly declare I didn& #39;t need an extension until the deadline for requesting was gone, what could I do?

I could manufacture some "unforeseen" issue with the original deal that would limit progress. Something I could blame the other party for...

Then of course it would just be common sense to extend.

I& #39;m not saying that is what they are doing, but there has to be some reason they have done something which will obviously have a negative impact to the current negotiation, and I don& #39;t have much beyond sheer stupidity.