Tee hee hee three times was maybe a little overkill but my jaw would have been on the floor with that PMBG I probably would have retested more than once before I could believe my eyes too!
I'm assuming you gave the HC this morning right? Not now while he's doing such a lovely surf also a tsp is usually enough to give them that little bump from the high forties to back over fifty especially at the end of the cycle - not where most cats earn their reductions!