If you are experiencing the bad sport timer glitch where the timer is stuck at 00d00h00m i think i may have found a fix for it. My timer was stuck on that time and for the few days it was stuck like that i did not play online.

I went into a bad sport lobby and started having a tank rampage because i was bored of not playing. I started blowing up personal vehicles and i noticed that no time was being added to my timer for blowing these cars up. When my tank blew up and i respawned i had no dunce cap on my head. Then i looked to see if i could put a hat on and i could!
Then i joined my friends game and it said i was forgiven from being a bad sport. If your timer is stuck at 00d00h00m or if random time is being added to your timer try it. If you do spawn without a dunce cap make sure you put a hat or a mask on so the cloud servers save your profile as a good sport.

Good luck!!!