Thank you. We Chinese need more tolerance and forgiveness.
<HTML>We're forced to ban the trouble maker, if only he hadn't been so rude and hubris, we would not do that. Sorry for inconvenience caused for other OU students.</HTML>
<HTML>We're (were) forced to ban the trouble maker, if only he hadn't been so rude and hubris, we would not do (have done) that. Sorry for (the) inconvenience caused for (to?) other OU students.</HTML>
<HTML>I had to do something to ban the trouble-maker. I would not do that
only if he had not been so rude and hubris. Sorry to the other
OU students for any inconvenience caused by this event.</HTML>