I don't see why it shouldn't be delayed (or stopped)
I find the arguments that it would be a good thing to see how well the very latest round of accountability reforms work before handing it over to be very persuasive. Previous rounds of reform have proven to be utterly ineffective, why should we believe that these will actually work?
And, in any case, what's the rush? Why is this happening at all? What problem is ending the DoC contract trying to solve? To my knowledge, the DoC/US Govt. in general, has done precisely nothing to interfere with ICANN/IANAs operations.