Replaced the fan with a proper clip and all is working great.
Now, for the "rest of the story"...
Put the furnace back in and nothing worked. Thought I tested bypassing the tstat and safety switch by the swing galley, so I ordered a new furnace since a camping trip with 4 little kids was on the horizon. Installed the brand new, $500 furnace and nothing. Turns out the safety switch was to blame. Boy did I feel stupid. Only thing that helped is my brother in law farmer who repairs heavy machinery on a daily basis missed the switch with me...so I suppose it could have happened to anyone.
Now, how to sell my 2-year old NT-20SEQ Suburban furnace