fatkoala

Went out to quote on a lower branch removal of a Red Gum ( Euc camaldulensis) today . The branch was a fairly large one for a fairly young tree approx 20-30 years old. The tree was in excellent health as it has been constantly watered due to it being close to wine grapes (the reason for removal of limb) I reasoned that this removal would be ok in other words the tree would handle it based on my experience, until the owner told me there had been a trench cut close to the tree (where exactly she didn't know ) about 5 years ago and it had cut large roots . I know that lower limbs (all limbs for that matter) provide excellent suppression/ shock absorbson in adverse weather ?
My question is will the removal of this limb cause the tree to become unaceptably unstable (ie top heavy) ?

any comments would be gladly recieved
cheers
Fatkoala