I wasn't at the dual meet so I didn't see what happened. However, here is something from the rule book that might be helpful.
A warning for the coach is something that takes place only at the table. If a coach goes to the table to argue misapplication of a rule, and he is correct in his argument, the sitation is corrected and nothing happens. If the coach argues misaaaplication of a rule and is wrong, he is given a warning for misconduct. If he goes to the table again and is wrong then there is a deduction of one team point for unsportsmanlike conduct.
If a coach is doing anything from the bench area, that is deemed by the official or his assistant as unsportsmanlike, there is a deduction of a team point for unsportsmanlike conduct. There is no warning. Also action that is unsportsmanlike can also be deemed as flagrant misconduct if the official or his assistant deems it as such.
On a side note, if the assistant coach goes to the table and argues misapplication of a rule and is wrong, he does not get the warning. The warning goes to the head coach. Unsportsmanlike conduct applies to the individual commitiing the unsportsmanlike act.