Charlton, you can always call the administrator and ask how they arrived at that. I'll throw out a guess that either by the time your order was received and then executed the market moved from $14,000 to $12,000 and that would be what you get or maybe thy sold at $14,000 and withheld the rest (on your behalf) to go toward taxes, this $2,000 would of course reduce your taxes due next spring.
You will owe taxes on the entire amount as taxes and possibly a 10% penalty. 401k money for the most part shouldn't come out until 59 1/2 though there are exceptions and you may qualify at 55 with a job separation. You should quickly find out before your rollover timeframe expires.
I highjacked a rainbow and crashed into a pot of gold - Bon Jovi