ooooh - I like it; when it comes to the actual call it is small.

use feature 'state';
use List::MoreUtils qw(part);
...

print oxTable->new([ 
      part { state $i++ / $len } @array
]);
[download]

My problem is that it requires a lot of extra includes...
It also breaks down on the same edge ($len = 0);
It also requires a temp variable.
It may be worth it to just stay with.

sub arrayStack 
{
    my $len= pop;
    return map [splice @_,0,$len], 0..$#_/$len;
}

...

print oxTable->new([ 
        arrayStack(@array,$len)
    ])
[download]

But it was a worthy exercise.... I actually never thought to use a counter as the inputted array and splicing off of the named array.