>Maybe I have a language problem here but to me "take him at his word" means the opposite to "differ to his word".

Yes, this is only a qualified statement rather then an absolute.

>> You've finally managed to disappoint me Andreas.

>I've done so several times before and you let me know each time. Not that I care much, though.

I wouldn't say several, but in this case I think you've let Haynie off way too easy.
"Not that I care much, though."
Ouch.