They traded Holiday for the pick that became Noel.
They didn't tank that year yet. They finish with 34 wins and they had the 11th pick MCW.
So the tanking process can be considered as :
2014 : Embid
2015 : Okafor
2016 : ?
Hinkie was hired May 14, 2013
So his major moves
Draft MCW
Traded Holiday and Pierre Jackson for Noel and NO 2014 1st (Elfrid Payton)
Acquire Royce White, rights to Furkan Aldemir for 2014 2nd (top 55 protected or else extinguished - extinguished)
Hire Brett Brown as Coach
Acquire Tony Wroten for 2014 2nd (top 50 protected or extinguished - not exercised)
Sign Hollis Thompson as undrafted free agent
Acquire BJ Mullins, 2018 LAC 2nd for 2014 2nd top 40 and 46-60 protected or extinguished - extinguished)
Trade Evan Turner, Lavoy Allen for Danny Granger, 2015 2nd (Luka Mitrovic)
Acquire Eric Maynor, 2015 WAS 2nd (Arturas Gudaitis), 2016 DEN 2nd for 2014 2nd (protected and ultimately extinguished)
Trade Spencer Hawes for Earl Clark, Henry Sims, 2014 2nd (Jerami Grant), 2014 2nd (Vasilije Mircic)
Waive Clark, Granger, Maynor
2014 Summer/Season
Draft (aside from above) - Embiid, KJ McDaniels
Trade rights to Elfrid Payton for rights to Dario Saric, 2015 2nd (Guillermo Hernangomez), 2017 ORL 1st
Trade Thad Young for Mbah a Moute, Alexey Shved, Future CLE 1st
Acquire Thabeet, cash for 2015 2nd (with protections and not exercised)
Sign JaKarr Sampson as undrafted free agent
Acquire Marquis Teague, 2019 2nd (more favorable of MIL/SAC) for Casper Ware
Waive Teague
Trade Arnett Moultrie for Travis Outlaw, Sixers right to swap 2018 2nd with NY, 2019 NY 2nd
Sign Robert Covington as undrafted free agent after season starts
Aquire AK47, Jorge Gutierrez, Sixers option to swap 2018 2nds with BKN, 2020 BKN 2nd for Brandon Davies
Waive Gutierrez
Sign Fulkan Aldemir
Acquire Ronny Turiaf, rights to Sergei Lishouk, 2015 HOU 2nd (JP Tokoto) for Shved
Waive Turiaf
Acquire Jared Cunningham, rights to Cenk Akyol, cash for rights to Lishouk
Waive Cunningham
Acquire Isaiah Canaan, 2015 2nd (Richaun Holmes) for KJ McDaniels
Acquire Javale McGee, Rights to Chukwudiebere Maduabum, future protected 1st for rights to Akyol
Trade MCW for future protected 1st
Claim Ish Smith off waivers
Waive AK47
Claim Thomas Robinson off waivers
Waive McGee
Claim Glenn Robinson III off waivers
2015 Summer/Season
Draft Okafor (in addition to those mentioned above)
Trade rights to Hernangomez for 2020 NY 2nd, 2021 NY 2nd
Acquire Nik Stauskas, Jason Thompson, Carl Landry, future 1st round pick, Sixers option to swap 2016 and 2017 1sts with SAC for rights to Gudaitis, rights to Mitrovic
Long list of moves, but honestly given what we know now, I don't think there is a single bad one there except perhaps the MCW trade pending the outcome of what that 1st ultimately ends up as (and that one is certainly defensible). Sure at the time moving Turner and Allen and then Hawes looked bad, but they got a pretty nice return for what were clearly role players. The Holiday and Young trades were both solid value even if they meant the Sixers were going to be very bad.