If he's a couple years old or older...and still a spike, he's probably a scrub that won't amount to much.
However...IMO, the majority of the spikes out there do not fall into this catagory. They are more likely late born deer, that have used up all their energy developing thier bodies...leaving little left for their first set of antlers. This is very common in areas with overpopulation, and skewed breeding periods.
Of course, we don't know for sure if those older spikes will ever amount to much, and once you shoot him...he'll never get any bigger.