personally i never was a huge fan of those aftermarket #1 Rec's, i always went back with the OEM (black square block) ones. As far as the replacement proceedures? sorry but removing the spiderblock is part of it since it screws directly to the #1Rec, No way around that. And due to the nature of this problem i would check that spider block too and make sure it isnt damaged, maybe even replace it anyway just in case, they arent that expensive.

Just make sure you mark the wires to thier respective connections to the other rec's when you disconnect and remove them.
Since you had a blown drive fuse and a blown out #1Rec i'd check the motor also and make sure nothing is wrong there, shorted or whatever. Do this before you install those new parts.