When you complain about someone backpedaling after you have done it so many times, it is ironic.
"ironic-happening in the opposite way to what is expected, and typically causing wry amusement because of this"
You backepedal. You accuse others of backpedaling. This is unexpected. I find it wryly amusing (wry as in "using or expressing dry, especially mocking, humor", not rye as in "bread")
I know you think the editors of the OED are "fallible humans" and thus may say that the definition is incorrect. However, it seems to be the same definition offered by every source.
That leaves possibilities:
1) The definition is correct and it applies to what you do when you complain about others doing things that YOU yourself do
2) You do not understand the word or the definition of the word and cannot apply it to reality
3) You know of a definition that is different from every other definition that can be found
Which is it?