If there is a visual deformiity from a type ii or type iii ac joint widening, how does the deformity go back to its normal location?

It does not: Grade 2 and 3 ac joint separations do not go back to its normal location. The shoulder becomes painless, and normal function ensues after a period of 6weeks or so. If thats the case, nothing further needs to be done. If the shoulder is painful and functionally compromised, surgery is indicated to reconstruct the ligaments of the ac joint. Here is a link to acj separation physcial therapy http://nycsportsmed.Com/pdf/ac%20joint%20types%20i-iii.Seneviratne.Pdf.