Being deflated is not normal, anemones are not corals and should never be dipped. Your bubble tip has an infection more then likely or a ripped foot, with correct water parameters it could bounce back on its own as bta's are very hardy but if you don't notice any improvements after the first day, it will more then likely need Septra DS or Ciprofloxacin which are antibiotics, a 10 or 20g tank, a heater, powerhead and egg crate to block off the powerhead and heater from the anemone. I can explain the treatment further if you decide to do this.