My advisor wants me to make my PhD thesis weaker
If it isn't going to damage the relationship with your advisor too much, you should submit your complete thesis. The arguments you provided from your advisor are pretty weak, and I'm quite sure that 130 pages isn't particularly long. Your arguments to keeping the length are compelling (strength of ideas, likelihood of appeasing difficult thesis committee member, etc). That said, we are only hearing your advisor's opinion second-hand. It's possible you are not giving us all the information, either because you misunderstand your advisor or your advisor has not fully detailed his concerns (which is definitely not optimal).

You said you mostly worked on this without talking to him. I may have missed it, but I don't see that you have explained your reasons to your advisor. Is there time to do this? Ask him what would happen and how would he feel if you submitted your thesis as is? This should preferably be done in person, but you may need to phone or email him. 

Good luck! Thesis time is always stressful, even under the best of conditions!