Wow I have clearly really upset you. I was polite and even apologised but you carry a grudge a long time?

Read my post again, you seem to have trouble reading and comprehending a very simple sentence - I can't sit idly by...

By 'idly' we mean 'doing nothing'. That's what I was doing, but now I have decided to interrupt his attacks on zumzero and his nonsense on the company and call him to account. So I am no longer sitting idly by - I am acting. Do you understand now?