I have counted the word "humanity" to be used 24 times in his speech by Dr. Paulos Mar Gregorios.
On the other hand the word "personal" is only used once in the following passage:
"On the one hand, all religions have to develop a deep spiritual commitment, the re-creation of the deepest levels of meaning for human existence in a personal and communal spirituality. But equally important is the other pole: the commitment to the welfare of humanity, the commitment to justice, the commitment to peace, the commitment to an environment that promotes life rather than threatens to extinguish it, the commitment to eliminate toxic drugs and nuclear weapons. "
I do not know if this is typical of his thesis about "the cause of ecumenism". If so, then he may be not talking about "ecumenism" as Christian theology has stated the ideal of "ecumenism" to be: a unification of persons as members of one body of Christ. He may be talking about an "ecumenism" that is regarding human unification to be already acomplished by the unity of human nature and which is starting from this assumption seeking to have "humanity" rectified.
The main problem with that thesis is that we may not seek "unification" but "rectification".
Again, I say that I have no other texts from Dr. Paulos Mar Gregorios so I may be wrong about what I have said.