Dipper vs. Manliness (Season 1, Episode 6) Credits Code

Here's the code thingy for "Dipper vs. Manliness". This was also the last episode for method #1. First off, the code letters read, "PU. FDHVDULDQ ZLOO EH RXW QHAW ZHHN. PU. DWEDVK ZLOO VXEVWLWXWH." When decoded with method #1 (Caesar method or Three Letters Back Rule), it says, "MR. CAESARAIN WILL BE OUT NEXT WEEK. MR. ATBASH WILL SUBSTITUTE." A lot were confused by this code, so here is what it means. "MR. CAESARAIN" was referring to the longer name for the Caesar method, Caesarain, and the "MR. ATBASH WILL SUBSTITUTE" part was meaning that method #2, Atbash method, was going to be in the next episode, Double Dipper.
Code: MR. CAESARAIN WILL BE OUT NEXT WEEK. MR. ABTASH WILL SUBSTITUTE.
Method #1