But be it so, I did not burden you: nevertheless, being crafty, I caught you with guile. - 2 Corinthians 12:16
Guile - Dolos in the Greek - dólos, dol'-os; from an obsolete primary verb, δέλλω déllō (probably meaning to decoy; compare G1185); a trick (bait), i.e. (figuratively) wile:—craft, deceit, guile, subtilty.
20 For I fear, lest, when I come, I shall not find you such as I would, and that I shall be found unto you such as ye would not: lest there be debates, envyings, wraths, strifes, backbitings, whisperings, swellings, tumults:
21 And lest, when I come again, my God will humble me among you, and that I shall bewail many which have sinned already, and have not repented of the uncleanness and fornication and lasciviousness which they have committed. - 2 Corinthians 12:20-21
The Corinthean church was one that easily fell into sin. Therefore Paul had to show craftiness in dealing with them. He had to plan out his moves to expose the sin. He had to be crafty in his approach. He had to sit down and think and strategize, otherwise it would end up doing more harm than good.
Whenever a church is in deceit, it takes a strategy in dealing with them. Example is when people are politicking to church, it takes an approach to deal with them over the evil they are doing.