front end - preventing TraditionalForm from getting "squished"

TraditionalForm[] does a great job generally speaking, with complex equations like the following,

TraditionalForm[
   Defer[

     1/Pi = 
     2*Sum[((-1)^k*(6*k)!*(13591409 + 545140134*k))/((3*k)!*k!^3*640320^(3*k + 3/2)), {k, 0, 44}]
   ]
]

(which is to say…)

However, if I put this same equation in a Grid[] or Table[] or Column[], it gets "squished," as in the following

How can I prevent this from happening? I particularly want to prevent it from swinging the upper bound of the summation to the right of the sigma.

Answer

Answer inspired by this :

Style[Grid[{{TraditionalForm[
     Defer[1/Pi = 
       2*Sum[((-1)^k*(6*k)!*(13591409 + 545140134*k))/((3*k)!*
            k!^3*640320^(3*k + 3/2)), {k, 0, 44}]]]}}], 
 UnderoverscriptBoxOptions -> {LimitsPositioning -> False}]

gives :

EDIT

Rojo's solution (see comments) is better because it doesn't reduce the sigma :

Grid[{{ TraditionalForm[Defer[1/Pi = 
       2*Sum[((-1)^k*(6*k)!*(13591409 + 545140134*k))/((3*k)!*
            k!^3*640320^(3*k + 3/2)), {k, 0, 44}]]] }}, 
  AllowScriptLevelChange -> False]