The way I do it damage free is to loosen the T bar adjuster , the LCA pivot nut , drop the control arm down remove the strut rod nuts & T bar retainer clip , & put a large pry bar between the K frame & LCA & pry everything backwards , some heat may loosen the grease . This will provide greater leverage on the t bar without marking it
The T bars are junk if you have clamped pipe wrench or vice grips on to them Please do not reuse them , they can fail at any scar on the bar & drop the car unexpectedly stranding you anywhere or injuring you if you happen to be under the car