ez....

Code (Skript):

1. command /spawn:
2.     trigger:
3.         set {Spawn::%player%} to 5
4.         send "Please don't move"
5.         while {Spawn::%player%} is not 0:
6.            wait a seconds
7.            subtract 1 from {Spawn::%player%}
8.         {Spawn::%player%} is 0
9.         teleport player to {spawn}
10.  
11. on any move:
12.     if {Spawn::%player%} is set:
13.         delete {Spawn::%player%}
14.         send "You moved..."
15.