Thisismein1972, I've seen that "crazy making" deletion technique before. The only remedy to it that I know of is to repeat a few key words from their previous post, enclosing them in quote marks, and saying...You said, "blah blah..". To that I reply, "blah blah...". But that makes for a very long and tedious conversation. And, when I use it I sound like either a lawyer or a paranoid. But it's the only way to not look like you're shadow boxing.
Well, either that or else delete ones own posts... which was probably the goal of the sparring partner.