Hi
I prefer to hit SPACE each time i mount and not waiting to be stuck 
(I've added an Unstuck checker if your toon is stuck anyway !)
Code:
$wowTitle = "World of Warcraft"
$sGatherTitle = "Nodes :"
$sGatherMountErrorRegex = "\[BOT\] Mount success !\s*$"
$sGatherUnstuck = "\s*\[UNSTUCK\] Let's turn !\s*$"
$SGatherLogControl = "[NAME:Logs; INSTANCE:1]"
$sGatherMountFix = "[MountFIX] Hit SPACE." & @CR;
$sGatherUnstuckFix = "[UnstuckFIX] Hit SPACE." & @CR;
$_keyDownDelay = 0.5 * 1000
While 1
If WinExists($sGatherTitle) Then
$sGatherText = ControlGetText($sGatherTitle,"",$SGatherLogControl)
If StringRegExp ($sGatherText, $sGatherMountErrorRegex) Then
If WinExists($wowTitle) Then
sleep(1 * 1000)
AutoItSetOption("SendKeyDownDelay", $_keyDownDelay)
ControlSend ($wowTitle, "", "", "{SPACE}", 0)
ControlSetText($sGatherTitle, "", $SGatherLogControl, $sGatherText & $sGatherMountFix )
Sleep(10 * 1000)
EndIf
ElseIf StringRegExp ($sGatherText, $sGatherUnstuck) Then
If WinExists($wowTitle) Then
sleep(1 * 1000)
AutoItSetOption("SendKeyDownDelay", $_keyDownDelay)
ControlSend ($wowTitle, "", "", "{SPACE}", 0)
ControlSetText($sGatherTitle, "", $SGatherLogControl, $sGatherText & $sGatherUnstuckFix )
Sleep(3 * 1000)
EndIf
EndIf
EndIf
Sleep(1 * 1000)
WEnd
I've made a .exe
Download : Vashjir.exe - 295 Kb
VirusTotal
Enjoy