I've got a coolant leak, constant drip drip drip falling from the bottom of the engine. I'm assuming it's the thermostat housing or w-pump. So, i'm gonna replace both. I've done it on my older bmws in the past but these new style plastic hose clamps have me stumped. I've removed the metal clips but the hoses will not release from the t-stat housing. What is the secret? I don't want to break them. Any help is appreciated.

94'325ic/5 w/73k, white,supercharger,bbs,supersprint,k&n
97'528i/a w/100k, white, stock
01'X5 3.0i w/60k sport white
91'300zx 2+2,130k turbo spoiler