Stealing Secret Syrup

As you approach the glass doors to get ready to pick the lock, you suddenly stop when you see a guard's desk right in front of the entrance! You can't pick the lock like this! He would see you right through the glass.

You wait around the corner trying to think of what to do, the guard leaves his desk to start his patrol of the building. You know this is your only chance, so you quickly rush to the front door and start picking the lock.

After 5 minutes of fiddling with your lockpicks, you finally hear the click and the front door unlocks. Just as you step inside, you hear footsteps approaching from around the corner, the guard is coming back to his desk!

What do you do?