I had that same problem, i used a vise grip or even a vise with rubber inserts on the vise, and just popped it in there and turned it right out, or the vise grips just use a very thick towel, not thik like large but like threaded tightly other wise the grips go right through and scratch. then just turn it out, i think most would agree that that design could withstand some changing.
Strap Wrenches aren't that expensive at most Hardware stores. A Vise or Pliers will work with some padding but you risk damaging the anodizing. At some point, when you have more money, I suggest investing in a strap wrench or two.