Deleting every other file in directory with name signature

I'm trying to thin out backup files.  We are accumulating too many backups but want to keep every other one older than a certain age.

For some reason, I get the files I need in my GetChildItem, but I'm trying to save them to an array and I'm having trouble using a for loop on the array so I can access every other one for deletion. This was easier when I was just deleting all files older than a certain age because I was using Remove-Item with my GetChildItem selection. Deleting every other one is tougher.

The code looks like this:

$Drive = "E:\temp\"

$deleteTime = -42;

$limit = (Get-Date).AddDays($deleteTime)

#this is finding the correct files but I don't think it's really in an array

(array)$temp1 = @(Get-ChildItem -Path $Drive -filter "*junk.vhd*" | Where-Object {$_.LastWriteTime - lt $limit} | Foreach-Object {$_.Name} )

#check that we can remove every other one with for loop

for($i=$temp1.GetLowerBound(0); $i -le $temp1.GetUpperBound(0); $i+=2) {

   Write-Host "removing $temp1[$i]"  #this is listing the entire array with a [0] for first one

}