So sorry - we had a similar problem . . .
We had this happen to our MC several years ago, but we weren't home - we were at work (poo skidmarks everywhere). We rushed hiim to the vet and he was diagnosed with an impacted hairball (which can be dangerous). I'm not saying that Maestro has this, but if you are scared, he probably is too - take him to a vet if he appears to be in pain or is struggling (fyi - a hairy bum can also cause this problem).
We now watch our MC closely (we know his bathroom habits quite well) and feed him pumpkin w/tuna juice as a treat to help control the hairballs (it works)! These guys are so hairy, and grooming is a major chore! Good luck with Maestro!