Carbonation Problems

I'm having a little problem with foam all of the sudden. I have 2 kegs on tap, both put on at different times. I believe keg 1 was on tap about 2 weeks earlier than keg 2. Both were kind of cloudy, still good, but i wanted to see if dropping the temp to 30 degrees while i was on vacation would help clear things up faster. Anyway, I came home from vacation and poured a couple of beers off each tap and they looked GREAT!!! Note: My PSI was set to about 14, which I know is a little high. I then decide to bump my serving temp up to around 40, which was where is was before vacation. Poured a beer the next day and it was all FOAM. I'm assuming that the low temps combined with 14 PSI was fine, giving a good pour. When I raised the temp, that's what caused the foaming issues, but I just don't quite understand why that would be.

Thanks in advance!

at a colder temprature, the beer absorbed more CO2
30deg @ 14psi=3.24 volumes
40deg @ 14psi=2.65 volumes
Force Carbing visualized

Unfortunatley, the method I am aware of to get rid of that extra CO2 best, is going to stir up all of that sediment at the bottom of the keg. (remove pressure, and skake the keg/bleed pressure)

Best bet would be to disconnect the gas, and bleed off the pressure, as some of the gas comes out of suspension, you can vent more off. (come back and pull the relief every couple hours for a day) then put the gas back on at your serving pressure.

That makes a lot of sense. The only thing that I don't understand is why it poured fine at 14 PSI & 32 degrees. Does beer foam that significantly less when it's very cold?

Thanks again!