Justin, I've come to the opinion that if players do something that is technically legal but aren't aware of how to legally accomplish it, our job is not to stick it to them for not knowing the MTR backwards and forwards but to explain the protocol to accomplish their goal. Assuming I'm called over and asked if they can legally both draw seven, I would not feel that it is beyond my scope to inform them that, “At any time both players may agree to draw the current game a begin a new one.” Leave it at that, and hope they fill in the pieces.
If I'm feeling super vindictive and am called over at the worst possible time (they've both drawn up to seven instead of mulling to four without agreeing to draw). I COULD issue them both a Warning for improperly drawing at the start of game and randomly remove cards from their hands until they each had three. But at that point the question will probably arise if there is a way to do it properly, and I would drop the hint above.
Edit: Jack beat me to it. :)
Edited Casey Hanford (March 8, 2014 04:10:29 AM)