Lets back track a bit an assets what the current situation is.
The Rapture - Currently, invisible and intangible.
http://img53.imageshack.us/img53/9853/xman047page11image0001mu1.jpg
http://i160.photobucket.com/albums/t173/EndlessMike9/xmaninvisible.jpg
The battlefield is rigged full of psi projections
http://img444.imageshack.us/img444/884/xma44p16nj7.jpg
So what am I trying to pull off here? Simply I will attempt to hold him movements permanently locking him in a form of suspended animation. [ Cable #30].
If need be, I will attempt to hold him down even more, like it was done to Abomination.
http://img404.imageshack.us/img404/5668/xman02014zp2.jpg
I know the full extent of both Juggernaut and the infinity gems. And like wise the point of the TK freeze and astral projections play its role keep him occupied, for me to take of his helm. I calmly say so, because even classic Juggs has had his helm taken off with his invulnerability on by the X-Men. I don’t recall exactly who, IRRC it was Arc Angel and some one else, who pulled it off.
Juggs is invulnerable to most forms of physical damage. But it does not mean, that his helm cant be taken off. In fact his invulnerability is still on with his helm on. Yet no one is stupid enough to walk up to him and try, unless you have the means to do it from a distance or avoiding physical harm. Thankfully I am covered by both accounts.