Don 't think it really matters in terms of Humphreys situation , whatever range of reasons or main reason, he or his management decided to move on towards the latter stages of last season .
D C E was still contracted for season 25 and another year or expectation of being mainly at Blacktown or Manly reserve grade either as a 7 or 12 , plus no doubt a bit more money on offer
Plus the addition of Joey Walsh by that time also .
Manly management again , had no intention of releasing D C E so Humphreys just opted for a better opportunity and should be really in the nothing to see here category