In the sentence:
Merging two forces that pull in opposing directions requires some creativity creativity.
Going through lists of words here[here][1] and there[there][2], I didn't find anything that would fit in this context. My first thought was that the meaning of pull here was closed to stay
"stay" (stay
"stay" in opposing directions). But there's no such meaning of it.
[1]: http://dictionary.cambridge.org/dictionary/english/pull
[2]: http://www.macmillandictionary.com/dictionary/british/pull_1