stalling is part of any beginner LP program. The SL site probably has more infor on what to do regarding it.
SS has a pretty standard 3 stalls in a row, 3 different times, with a deload after each occasion. SS, despite the lower volume, is definitely not any less intense.... in fact it is more intense because you'll be lifting heavier weights.
Read up on what to do regarding the stalls in SL and follow the program. SL has you stalling earlier than SS because of the extra volume. That being said, you could even probably jump onto SS after SL to milk the beginner gains a bit more. I read on another site to even go through 4-5 stalls on SS (I've only run it through 3, and it was TOUGH going at the end) and that you shouldn't move on from the upper body work until both bench and OHP stall at the same time.
Also, are you sure you really want to do more MA training or just looking for an excuse to avoid intensity. It sounds like you're approaching the toughest and most beneficial (esp mentally) part of the program and looking for an out.