Ahh yes!!
I have seen this arm-wrestle too..... Brzenk Vs. Voevoda. I think I understand what you are talking about. Probably came down to the ref on the day, but I recall hearing soemthing about a parallel pin where if you are in a losing position and you arm gets to what the referee believes is parallel to the table, you should lose the bout. Some people dont know when they are beaten. You can put their arm on the table with their wrist cocked in the air and they are like "i'm not down yet" I think its more damaged pride than anything else. The cant handle the loss so they play those silly games.