So your uncle is lying at
least once to you. You don't get a FAIL reading with only 2 beers (unless he failed or refused to provide a sample and got a 90 Day Prohibition that way). Secondly, did he go and renew his licence at a Drivers Licencing Center or just start driving after the 90 days? Cause they wouldn't have re-issued his DL without explaining what he needed to do/having completed the necessary steps first.
As for the rest of your questions, time to
Contact ICBC