I find it remarkable that people seem to be writing the guy off when this blueprint has been followed countless times.
If we don't give him time its another new dawn, 10 games of good then the players slip back into the old mistakes and lazy spells
If we sack him then another high calibre manager will go off and win things at other clubs, citing Spurs as the "only club I had a problem"
If we sack him then we need another round of bedding in, another season of chaos.
Ange deserved to keep his job after last season, and should have been given the chance, but as the club elected to make a change, across the whole footballing setup, it was practical to release him on a high. Thomas Frank has very clearly established methods, and to suggest that he's not going to get it right indicates either a short termism mindset (which we really can't have when you look at Woolwich and what patience achieved there) or a lack of understanding of what turns a football team into a success. We can't just give people 18 months and expect miracles - we're not funded that way and football doesn't work that way.
I accept there is also a third option which is the manager isn't good enough, but he's managed for years in the same league, has won admirers up and down the land for his abilities, so this is absolutely time to acknowledge the club are the problem not him.