Deflection:

    2
....^....
....^....
.O..^..O.
....^....
....\<<<<2
...O.....
.........
.......O.

Detour:

  8   8
..v...^..
..\>>>/.
.O.....O.
......../9
........v
...O....v
........\9
.......O.

 .........
 .........
 .O.....O.
 ../>>>\..
1>>/...v..
 ...O..v..
 ..../</..
 ....v..O.
     1

 .........
 .........
 .........
 .....O...
1>>>>\....
 ....v....
 ....v....
 ....v....
     1