Maybe I'm just too patient for my own good, but I do not believe that two consecutive loses make a slump. Furthermore, losing those two games by getting blanked both times and scoring a total of only one run the past three games also does not make a slump.
It's a little detour, and I have no doubt the club will get themselves back on the right road. Via Ken Gurnick at MLB.com:
"We're OK," Mattingly said. "Over the last three games, we haven't scored runs. On the homestand, we weren't really great.