This looks really cool.
I'll sure try it out next time.
ok here's my idea
make around him a marshmallow shield (how to do it on http://www.psipog.net/show.php?id=38) and programme it to absorb all his attacks from the inside
the more he will try to suck, the stronger the shield will become and will last longer
if he knows what are you doing though, i don't recommend it, i'm yet to try it but i think it would work
now, what do you think ???