Advice on removing these bolts

For sure. Whatever it is, i just hope its not my transmission. My transmission still is smooth though

 

I’d say based on KISS Theory, you Pucked something up when you did the work.

Assumptions of what may be/what went wrong:

1) You hammered or hacked the shaft trying to remove?

2) You didn’t align the shaft back like previously installed. Important.

3) You diin’t put your washer back on. Important.

4) You twisted or torqued your u-joints wrongly by not properly supporting the shaft with straps?

5) Who knows what else?

 

I put the washer in now, i did connect the two sections of the shaft the same, i really didnt properly support either shafts like your saying. And ya who knows