I am looking at your link and I am thinking this man is mistaken. It is my understanding that the Declaration was being drafted by a committee, and it was the members of the committee that said his anti-slave language wouldn't fly.
I have no recollection of the original draft being sent out to the representatives of the states for commentary, so if they never saw a copy of it, how can they object to it?
This is what I remember:
On June 11, 1776, the Continental Congress selects Thomas Jefferson of Virginia, John Adams of Massachusetts, Benjamin Franklin of Pennsylvania, Roger Sherman of Connecticut and Robert R. Livingston of New York to draft a declaration of independence.Knowing Jefferson’s prowess with a pen, Adams urged him to author the first draft of the document, which was then carefully revised by Adams and Franklin before being given to Congress for review on June 28.
It looks like it was Adams and Franklin that stripped out all the anti-slavery language.
No, so far as I know it was the Congress meeting as a whole that deleted those phrases. Later, Jefferson blamed Georgia and South Carolina for deleting his words, though he also couldn't resist blaming the Northerners as well.
"The clause...reprobating the enslaving the inhabitants of Africa, was struck out in compliance to South Carolina and Georgia, who had never attempted to restrain the importation of slaves, and who on the contrary still wished to continue it. Our Northern brethren also I believe felt a little tender under these censures; for tho' their people have very few slaves themselves, yet they had been pretty considerable carriers of them to others.”
Later, Adams said he wished the passage had been kept in.