What is " Origenism" I ran across this quote in the Catholic Encyclopedia:


  Pope St. Anastasius I
  
  A pontiff who is remembered chiefly for his condemnation of Origenism.
  A Roman by birth, he became pope in 399, and died within a little less
  than four years. Among his friends were Augustine, and Jerome, and
  Paulinus. Jerome speaks of him as a man of great holiness who was rich
  in his poverty. It was during the time of the barbarian invasions.


I followed the link to "Origenism" and started to read to see why it was condemned, but (and I really hate to admit this) the articles in the Catholic Encyclopedia just confuse me.  There are so many terms that I've never heard, and am unfamiliar with that I end up having to look those up and then looking up others.  

So, in a nutshell, I'm looking for a lay-person's explanation of what "Origenism" is, and if it's not obvious when comparing it to traditional teachings, why it was condemned.
According to the Catholic Encyclopedia article on Origen and Origenism, the "sketchy" doctrines are:


Allegorism in the interpretation of Scripture
Origen believed that, being God-inspired and written by human hand, scripture must be interpreted in a manner than is worth of God. As such, some Biblical passages must be interpreted allegorically, lest we think God a tyrannical, blood-thirsty, etc.. It's important to note first, that a strictly allegorical interpretation of scripture was unorthodox. But secondly, Origen apparently took the allegorical interpretation train a little too far according to some. So, even at though allegorical interpretations may be OK, good, and in some cases necessary; Origen himself is an example of how difficult it can be to get off the allegory train. I.e., it's acceptable and good, but it's dangerous; be careful!
Subordination of the Divine Persons
The language in Catholic Encyclopedia is confusing (to me) as to whether Origen is for or against the "sketchy" Trinitarian tendencies of subordinating The Son to The Father or to what extent he believed what he did. But, the Wikipedia article on Subordinationism clarifies it quite succinctly for us:



  Perhaps the most elaborate of advocates in favor of Subordinationism
  was Origen of Alexandria. Origen taught that Jesus was a "DEUTEROS
  THEOS" (second God) He also said the Son was "distinct" from the
  Father. Finally Origen insisted that the Son is other in substance
  than the Father. It should be noticed that some of these same
  references are used to defend the concept of the Trinity. However,
  Subordinationism is not a differentiation or distinction between
  persons in the Trinity. In this regard they agree. Subordinationism
  rather suggests that the Son (and Spirit) are other in substance than
  the Father. (Subordinationism, Pre-Nicean)


Other things I've seem suggest that the extreme material distance placed between the Father and Son in this theology isn't actually Origen's intended understanding. Rather, it's termed Origenism because his ideas paved the way for the more radical, questionable, and non-orthodox understanding. But, I'm not at all 100% sure on that.


The theory of successive trials and a final restoration.
I didn't quite understand which details of the theology are technically part of this questionable doctrine. But, these are listed:


Eternal creation - An infinite number of universes/worlds have been and will be created  infinitely backwards in time and infinitely forward in time.
Intellectual creation - All intellectual entities were created equal. Some of them got bored and became naughty.
Matter exists for the spiritual - More unorthodox, I think, is the subpoint that without matter, the spiritual cannot be. If the matter would cease to be, the spiritual entity it serves would cease to be.
Universal, final restoration - Everything will be returned to its original state of glory and union with God. I.e., hell isn't really eternal, it just seems like it.