That is one of the beauty marks and design of the spread (besides it being fairly simple to run). It negates the effects of a strong pass rush and because the defense is spread out (including the DL) it creates natural running lanes. UTEPs OC (or Kugler for that matter) can't get caught into trying to force the run in addition to running when they expect you to run. The key is a good mix and keeping Ark's defense off balance.
The last part of your statement implies UTEP doesn't have any WRs. I disagree. There were several that made names for themselves this past spring that will be key in competing against Ark.
Remember I said using a smart pass game and route tree? That means not trying to send all of the WRs on fly routes. Or sending three deep and one underneath, like they did in several games last season. UTEPs QB isn't going to have that type of time. How UTEP "kills" the clock against a bigger, faster opponent is outsmarting them. Quick routes. Crossing routes (since they like to sit in cover two a lot) and do it from the gun. Zone blocking schemes and quick hit run plays. Varying the tempo of the offense will help tire Arks defense as well. UTEP is not going to beat Ark by trying to be more physical. They have to be smarter.
In Sun Tzu's book, The Art of War, one of his keys to defeating an opponent is to be where they are not. You don't win by "going into" the strength of your opponent. You force them to move to yours. What's UTEPs? Not doing what they expect us to do - run it, run it, run it. Ark expects us to run, so we pass. But we pass smartly and we pass to set up the run.
I understand your thinking. All I'm asking is for you to twist that perspective to the right just a bit and understand the strategy they'll need to utilize for this game (and any game there after). It can't be Jones up the middle on 1st and 2nd down and it can't be a Jet sweep to Golden on third, followed by the same set of plays the next series.