Just grab with two hands people.
It's really not that hard. When you do that, even if all Five people are standing up, by the end of the match, the person that crawls that ladder won't be able to get to you fast enough, and a computer player will ALWAYS knock the ladder over. This leaves you to just hang there and drain the meter.
This should only take 3-4 times. I'm pretty sure 90 percent of the MITB matches I've had, the other competitors don't even get a chance to grab the belt. (When I'm actually trying to win, and not just playing a match)
And also, never keep reaching when someone's like right at the top of the ladder. (When the meter's like almost all the way down.) Because then you're just asking for him to knock you off, and take it without even having to hold it a second.