I don't know about the unity thing. That is pretty well contrary to the Scripture.
For one, the Resurrection is expressly bodily -- now how bodily,
And of course, Jesus (who is a facet of God) was fully man, and that includes all the "joys" of being a human from Acid reflux to Zits.
Well the unity business is a Hindu thing, but "made in a spiritual image of God" seems to me that when we go to Heaven we become one with God. Sometimes the similarity of religious thought around the world starting from different precepts is quite interesting.