I don't know who your source is, but from my experience, you do not have any idea what you are talking about. I ran for a rival college for four years and I have a lot of respect for CU and their program. Many of my friends who ran for CU had great respect for the guy, and a relative of mine who worked for Wetmore had nothing but good things to say about the man. He is probably more concerned with coaching collegiate athletes than post-collegiates, but isn't that what he is paid to do anyhow?
Take a look at the accomplishments (both during college and after college) of runners who have run under Wetmore and you will be extremely hard pressed to find an equal. The man lives and breathes cross country and track and field from sunrise to sunset. From 1993-2005, there were only three American born male runners who won national cross country championships, and they all ran for Mark. He has taken every single male foot locker champion that he has recruited and trained them to be a national champion. No other coach can say the same.
That being said, I don't know if it is the best place to walk on if you are a talent that will need a couple of years to develop to become a contributor to the team. There is always an under developed talent waiting to be found, but with the restrictions of title IX in place, it is almost impossible to have anyone but the best make the team.
Mark or one of his assistants will still likely write up work outs for the club type team (those who are not official members of the team due to title IX restrctions but are still allowed to train in a club type structure), but you probably won't recieve the level of attention that you might receive somewhere else. CU is a top caliber program that is vying for national championships year in and year out, so if you are a couple of years away from making that level, you might want to consider some place else. You can still do it, you just have to be more self motivated than you would someplace else.
Fortunately, there are a lot of other options if you want to run for a very good program in state. CSU is an excellent place to train, and they have excellent coaches. Academically, it is a well respected school (the same cannot be said for some of the other in state schools with good running programs like Western and Adams, unless you are looking to become a teacher or nurse). At any of these schools, you would have the opportunity to contribute to the team, have good coaching, and if you still wanted to go to CU later, it would not be as difficult to transfer since you are not in the same conference (and if you are not on scholarship anyhow, there is usually no problem getting a release).