I believe you are right. We appear to have trapped a good portion of the remaining enemy. I wouldn't be surprised if some pretty big names from what is left of the Taliban end up being in this group. And when cornered, any animal will fight to the death. We can expect no less here.
Even with today's battle deaths, it must be noted that American casualties have been astonishingly low for this conflict. Remember how critics said back in October that we would be "bogged" down in a Vietnam-style conflict and that the "brutal Afghan winter" would bring our offensive to a grinding halt. Well spring is in the air and it's time to mop this mess up and move on to the next enemy.